{"Name":"Hydrogen","Atomic Number (Z)":1,"Formula":"H","Standard Atomic weight (Da)":"1.0080","Origin of name":"Greek roots hydro- + -gen, 'water-forming'","Group":"1","Group Block":"s-block","Period":1,"Density (g/cm^3)":"0.00008988","Melting Point (K)":"14.01","Boiling Point (K)":"20.28","Specific Heat Capacity (J/g K)":14.304,"Electronegativity":"2.20","Abundance in Earth's crust (mg/kg)":"1400","Origin":"primordial","Standard State at Room Temperature":"Gas"}
{"Name":"Helium","Atomic Number (Z)":2,"Formula":"He","Standard Atomic weight (Da)":"4.0026","Origin of name":"Greek h\\u1e17lios \\'sun\\'","Group":"18","Group Block":"s-block","Period":1,"Density (g/cm^3)":"0.0001785","Melting Point (K)":"-[k]","Boiling Point (K)":"4.22","Specific Heat Capacity (J/g K)":5.193,"Electronegativity":"","Abundance in Earth's crust (mg/kg)":"0.008","Origin":"primordial","Standard State at Room Temperature":"Gas"}
{"Name":"Lithium","Atomic Number (Z)":3,"Formula":"Li","Standard Atomic weight (Da)":"6.94","Origin of name":"Greek l\\u00edthos \\'stone\\'","Group":"1","Group Block":"s-block","Period":2,"Density (g/cm^3)":"0.534","Melting Point (K)":"453.69","Boiling Point (K)":"1560","Specific Heat Capacity (J/g K)":3.582,"Electronegativity":"0.98","Abundance in Earth's crust (mg/kg)":"20","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Beryllium","Atomic Number (Z)":4,"Formula":"Be","Standard Atomic weight (Da)":"9.0122","Origin of name":"Beryl, mineral (ultimately after Belur, Karnataka, India?)[4]","Group":"2","Group Block":"s-block","Period":2,"Density (g/cm^3)":"1.85","Melting Point (K)":"1560","Boiling Point (K)":"2742","Specific Heat Capacity (J/g K)":1.825,"Electronegativity":"1.57","Abundance in Earth's crust (mg/kg)":"2.8","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Boron","Atomic Number (Z)":5,"Formula":"B","Standard Atomic weight (Da)":"10.81","Origin of name":"Borax, mineral (from Arabic bawraq, Middle Persian *b\\u014drag)","Group":"13","Group Block":"p-block","Period":2,"Density (g/cm^3)":"2.34","Melting Point (K)":"2349","Boiling Point (K)":"4200","Specific Heat Capacity (J/g K)":1.026,"Electronegativity":"2.04","Abundance in Earth's crust (mg/kg)":"10","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Carbon","Atomic Number (Z)":6,"Formula":"C","Standard Atomic weight (Da)":"12.011","Origin of name":"Latin carbo 'coal'","Group":"14","Group Block":"p-block","Period":2,"Density (g/cm^3)":"2.267","Melting Point (K)":">4000","Boiling Point (K)":"4300","Specific Heat Capacity (J/g K)":0.709,"Electronegativity":"2.55","Abundance in Earth's crust (mg/kg)":"200","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Nitrogen","Atomic Number (Z)":7,"Formula":"N","Standard Atomic weight (Da)":"14.007","Origin of name":"Greek n\\u00edtron + -gen, \\'niter-forming\\'","Group":"15","Group Block":"p-block","Period":2,"Density (g/cm^3)":"0.0012506","Melting Point (K)":"63.15","Boiling Point (K)":"77.36","Specific Heat Capacity (J/g K)":1.04,"Electronegativity":"3.04","Abundance in Earth's crust (mg/kg)":"19","Origin":"primordial","Standard State at Room Temperature":"Gas"}
{"Name":"Oxygen","Atomic Number (Z)":8,"Formula":"O","Standard Atomic weight (Da)":"15.999","Origin of name":"Greek oxy- + -gen, 'acid-forming'","Group":"16","Group Block":"p-block","Period":2,"Density (g/cm^3)":"0.001429","Melting Point (K)":"54.36","Boiling Point (K)":"90.20","Specific Heat Capacity (J/g K)":0.918,"Electronegativity":"3.44","Abundance in Earth's crust (mg/kg)":"461000","Origin":"primordial","Standard State at Room Temperature":"Gas"}
{"Name":"Fluorine","Atomic Number (Z)":9,"Formula":"F","Standard Atomic weight (Da)":"18.998","Origin of name":"Latin fluo 'to flow'","Group":"17","Group Block":"p-block","Period":2,"Density (g/cm^3)":"0.001696","Melting Point (K)":"53.53","Boiling Point (K)":"85.03","Specific Heat Capacity (J/g K)":0.824,"Electronegativity":"3.98","Abundance in Earth's crust (mg/kg)":"585","Origin":"primordial","Standard State at Room Temperature":"Gas"}
{"Name":"Neon","Atomic Number (Z)":10,"Formula":"Ne","Standard Atomic weight (Da)":"20.180","Origin of name":"Greek n\\u00e9on \\'new\\'","Group":"18","Group Block":"p-block","Period":2,"Density (g/cm^3)":"0.0009002","Melting Point (K)":"24.56","Boiling Point (K)":"27.07","Specific Heat Capacity (J/g K)":1.03,"Electronegativity":"","Abundance in Earth's crust (mg/kg)":"0.005","Origin":"primordial","Standard State at Room Temperature":"Gas"}
{"Name":"Sodium","Atomic Number (Z)":11,"Formula":"Na","Standard Atomic weight (Da)":"22.990","Origin of name":"Coined by Humphry Davy who first isolated it, from English soda (specifically caustic soda), via Italian from Arabic \\u1e63ud\\u0101\\u0295 \\'headache\\'\\u00a0\\u00b7 \\u00a0Symbol Na, from Neo-Latin natrium, coined from German Natron \\'natron\\'","Group":"1","Group Block":"s-block","Period":3,"Density (g/cm^3)":"0.968","Melting Point (K)":"370.87","Boiling Point (K)":"1156","Specific Heat Capacity (J/g K)":1.228,"Electronegativity":"0.93","Abundance in Earth's crust (mg/kg)":"23600","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Magnesium","Atomic Number (Z)":12,"Formula":"Mg","Standard Atomic weight (Da)":"24.305","Origin of name":"Magnesia region, eastern Thessaly, Greece","Group":"2","Group Block":"s-block","Period":3,"Density (g/cm^3)":"1.738","Melting Point (K)":"923","Boiling Point (K)":"1363","Specific Heat Capacity (J/g K)":1.023,"Electronegativity":"1.31","Abundance in Earth's crust (mg/kg)":"23300","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Aluminium","Atomic Number (Z)":13,"Formula":"Al","Standard Atomic weight (Da)":"26.982","Origin of name":"Alumina, from Latin alumen (gen. aluminis) 'bitter salt, alum'","Group":"13","Group Block":"p-block","Period":3,"Density (g/cm^3)":"2.70","Melting Point (K)":"933.47","Boiling Point (K)":"2792","Specific Heat Capacity (J/g K)":0.897,"Electronegativity":"1.61","Abundance in Earth's crust (mg/kg)":"82300","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Silicon","Atomic Number (Z)":14,"Formula":"Si","Standard Atomic weight (Da)":"28.085","Origin of name":"Latin silex 'flint' (originally silicium)","Group":"14","Group Block":"p-block","Period":3,"Density (g/cm^3)":"2.3290","Melting Point (K)":"1687","Boiling Point (K)":"3538","Specific Heat Capacity (J/g K)":0.705,"Electronegativity":"1.9","Abundance in Earth's crust (mg/kg)":"282000","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Phosphorus","Atomic Number (Z)":15,"Formula":"P","Standard Atomic weight (Da)":"30.974","Origin of name":"Greek ph\\u014dsph\\u00f3ros \\'light-bearing\\'","Group":"15","Group Block":"p-block","Period":3,"Density (g/cm^3)":"1.823","Melting Point (K)":"317.30","Boiling Point (K)":"550","Specific Heat Capacity (J/g K)":0.769,"Electronegativity":"2.19","Abundance in Earth's crust (mg/kg)":"1050","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Sulfur","Atomic Number (Z)":16,"Formula":"S","Standard Atomic weight (Da)":"32.06","Origin of name":"Latin","Group":"16","Group Block":"p-block","Period":3,"Density (g/cm^3)":"2.07","Melting Point (K)":"388.36","Boiling Point (K)":"717.87","Specific Heat Capacity (J/g K)":0.71,"Electronegativity":"2.58","Abundance in Earth's crust (mg/kg)":"350","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Chlorine","Atomic Number (Z)":17,"Formula":"Cl","Standard Atomic weight (Da)":"35.45","Origin of name":"Greek chl\\u014dr\\u00f3s \\'greenish yellow\\'","Group":"17","Group Block":"p-block","Period":3,"Density (g/cm^3)":"0.0032","Melting Point (K)":"171.6","Boiling Point (K)":"239.11","Specific Heat Capacity (J/g K)":0.479,"Electronegativity":"3.16","Abundance in Earth's crust (mg/kg)":"145","Origin":"primordial","Standard State at Room Temperature":"Gas"}
{"Name":"Argon","Atomic Number (Z)":18,"Formula":"Ar","Standard Atomic weight (Da)":"39.95","Origin of name":"Greek arg\\u00f3s \\'idle\\' (it is inert)","Group":"18","Group Block":"p-block","Period":3,"Density (g/cm^3)":"0.001784","Melting Point (K)":"83.80","Boiling Point (K)":"87.30","Specific Heat Capacity (J/g K)":0.52,"Electronegativity":"","Abundance in Earth's crust (mg/kg)":"3.5","Origin":"primordial","Standard State at Room Temperature":"Gas"}
{"Name":"Potassium","Atomic Number (Z)":19,"Formula":"K","Standard Atomic weight (Da)":"39.098","Origin of name":"Neo-Latin potassa \\'potash\\', from pot + ash\\u00a0\\u00b7 \\u00a0Symbol K, from Neo-Latin kalium, from German","Group":"1","Group Block":"s-block","Period":4,"Density (g/cm^3)":"0.89","Melting Point (K)":"336.53","Boiling Point (K)":"1032","Specific Heat Capacity (J/g K)":0.757,"Electronegativity":"0.82","Abundance in Earth's crust (mg/kg)":"20900","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Calcium","Atomic Number (Z)":20,"Formula":"Ca","Standard Atomic weight (Da)":"40.078","Origin of name":"Latin calx 'lime'","Group":"2","Group Block":"s-block","Period":4,"Density (g/cm^3)":"1.55","Melting Point (K)":"1115","Boiling Point (K)":"1757","Specific Heat Capacity (J/g K)":0.647,"Electronegativity":"1.00","Abundance in Earth's crust (mg/kg)":"41500","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Scandium","Atomic Number (Z)":21,"Formula":"Sc","Standard Atomic weight (Da)":"44.956","Origin of name":"Latin Scandia 'Scandinavia'","Group":"3","Group Block":"d-block","Period":4,"Density (g/cm^3)":"2.985","Melting Point (K)":"1814","Boiling Point (K)":"3109","Specific Heat Capacity (J/g K)":0.568,"Electronegativity":"1.36","Abundance in Earth's crust (mg/kg)":"22","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Titanium","Atomic Number (Z)":22,"Formula":"Ti","Standard Atomic weight (Da)":"47.867","Origin of name":"Titans, children of Gaia and Ouranos","Group":"4","Group Block":"d-block","Period":4,"Density (g/cm^3)":"4.506","Melting Point (K)":"1941","Boiling Point (K)":"3560","Specific Heat Capacity (J/g K)":0.523,"Electronegativity":"1.54","Abundance in Earth's crust (mg/kg)":"5650","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Vanadium","Atomic Number (Z)":23,"Formula":"V","Standard Atomic weight (Da)":"50.942","Origin of name":"Vanadis, a name for Norse goddess Freyja","Group":"5","Group Block":"d-block","Period":4,"Density (g/cm^3)":"6.11","Melting Point (K)":"2183","Boiling Point (K)":"3680","Specific Heat Capacity (J/g K)":0.489,"Electronegativity":"1.63","Abundance in Earth's crust (mg/kg)":"120","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Chromium","Atomic Number (Z)":24,"Formula":"Cr","Standard Atomic weight (Da)":"51.996","Origin of name":"Greek chr\\u00f3ma \\'color\\'","Group":"6","Group Block":"d-block","Period":4,"Density (g/cm^3)":"7.15","Melting Point (K)":"2180","Boiling Point (K)":"2944","Specific Heat Capacity (J/g K)":0.449,"Electronegativity":"1.66","Abundance in Earth's crust (mg/kg)":"102","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Manganese","Atomic Number (Z)":25,"Formula":"Mn","Standard Atomic weight (Da)":"54.938","Origin of name":"Corrupted from magnesia negra; see magnesium","Group":"7","Group Block":"d-block","Period":4,"Density (g/cm^3)":"7.21","Melting Point (K)":"1519","Boiling Point (K)":"2334","Specific Heat Capacity (J/g K)":0.479,"Electronegativity":"1.55","Abundance in Earth's crust (mg/kg)":"950","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Iron","Atomic Number (Z)":26,"Formula":"Fe","Standard Atomic weight (Da)":"55.845","Origin of name":"English, from Proto-Celtic *\\u012bsarnom \\'iron\\', from a root meaning \\'blood\\'\\u00a0\\u00b7 \\u00a0Symbol Fe, from Latin ferrum","Group":"8","Group Block":"d-block","Period":4,"Density (g/cm^3)":"7.874","Melting Point (K)":"1811","Boiling Point (K)":"3134","Specific Heat Capacity (J/g K)":0.449,"Electronegativity":"1.83","Abundance in Earth's crust (mg/kg)":"56300","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Cobalt","Atomic Number (Z)":27,"Formula":"Co","Standard Atomic weight (Da)":"58.933","Origin of name":"German Kobold, 'goblin'","Group":"9","Group Block":"d-block","Period":4,"Density (g/cm^3)":"8.90","Melting Point (K)":"1768","Boiling Point (K)":"3200","Specific Heat Capacity (J/g K)":0.421,"Electronegativity":"1.88","Abundance in Earth's crust (mg/kg)":"25","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Nickel","Atomic Number (Z)":28,"Formula":"Ni","Standard Atomic weight (Da)":"58.693","Origin of name":"Nickel, a mischievous sprite in German miner mythology","Group":"10","Group Block":"d-block","Period":4,"Density (g/cm^3)":"8.908","Melting Point (K)":"1728","Boiling Point (K)":"3186","Specific Heat Capacity (J/g K)":0.444,"Electronegativity":"1.91","Abundance in Earth's crust (mg/kg)":"84","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Copper","Atomic Number (Z)":29,"Formula":"Cu","Standard Atomic weight (Da)":"63.546","Origin of name":"English, from Latin cuprum, after Cyprus","Group":"11","Group Block":"d-block","Period":4,"Density (g/cm^3)":"8.96","Melting Point (K)":"1357.77","Boiling Point (K)":"2835","Specific Heat Capacity (J/g K)":0.385,"Electronegativity":"1.90","Abundance in Earth's crust (mg/kg)":"60","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Zinc","Atomic Number (Z)":30,"Formula":"Zn","Standard Atomic weight (Da)":"65.38","Origin of name":"Most likely German Zinke, 'prong, tooth', but some suggest Persian sang 'stone'","Group":"12","Group Block":"d-block","Period":4,"Density (g/cm^3)":"7.14","Melting Point (K)":"692.88","Boiling Point (K)":"1180","Specific Heat Capacity (J/g K)":0.388,"Electronegativity":"1.65","Abundance in Earth's crust (mg/kg)":"70","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Gallium","Atomic Number (Z)":31,"Formula":"Ga","Standard Atomic weight (Da)":"69.723","Origin of name":"Latin Gallia 'France'","Group":"13","Group Block":"p-block","Period":4,"Density (g/cm^3)":"5.91","Melting Point (K)":"302.9146","Boiling Point (K)":"2673","Specific Heat Capacity (J/g K)":0.371,"Electronegativity":"1.81","Abundance in Earth's crust (mg/kg)":"19","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Germanium","Atomic Number (Z)":32,"Formula":"Ge","Standard Atomic weight (Da)":"72.630","Origin of name":"Latin Germania 'Germany'","Group":"14","Group Block":"p-block","Period":4,"Density (g/cm^3)":"5.323","Melting Point (K)":"1211.40","Boiling Point (K)":"3106","Specific Heat Capacity (J/g K)":0.32,"Electronegativity":"2.01","Abundance in Earth's crust (mg/kg)":"1.5","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Arsenic","Atomic Number (Z)":33,"Formula":"As","Standard Atomic weight (Da)":"74.922","Origin of name":"Middle English, from Middle French arsenic, from Greek arsenik\\u00f3n \\'yellow arsenic\\' (influenced by arsenik\\u00f3s \\'masculine, virile\\'), from a West Asian wanderword ultimately from Old Iranian *zarniya-ka \\'golden\\'","Group":"15","Group Block":"p-block","Period":4,"Density (g/cm^3)":"5.727","Melting Point (K)":"1090[l]","Boiling Point (K)":"887","Specific Heat Capacity (J/g K)":0.329,"Electronegativity":"2.18","Abundance in Earth's crust (mg/kg)":"1.8","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Selenium","Atomic Number (Z)":34,"Formula":"Se","Standard Atomic weight (Da)":"78.971","Origin of name":"Greek sel\\u1e17n\\u0113 \\'moon\\'","Group":"16","Group Block":"p-block","Period":4,"Density (g/cm^3)":"4.81","Melting Point (K)":"453","Boiling Point (K)":"958","Specific Heat Capacity (J/g K)":0.321,"Electronegativity":"2.55","Abundance in Earth's crust (mg/kg)":"0.05","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Bromine","Atomic Number (Z)":35,"Formula":"Br","Standard Atomic weight (Da)":"79.904","Origin of name":"Greek br\\u00f4mos \\'stench\\'","Group":"17","Group Block":"p-block","Period":4,"Density (g/cm^3)":"3.1028","Melting Point (K)":"265.8","Boiling Point (K)":"332.0","Specific Heat Capacity (J/g K)":0.474,"Electronegativity":"2.96","Abundance in Earth's crust (mg/kg)":"2.4","Origin":"primordial","Standard State at Room Temperature":"Liquid"}
{"Name":"Krypton","Atomic Number (Z)":36,"Formula":"Kr","Standard Atomic weight (Da)":"83.798","Origin of name":"Greek krypt\\u00f3s \\'hidden\\'","Group":"18","Group Block":"p-block","Period":4,"Density (g/cm^3)":"0.003749","Melting Point (K)":"115.79","Boiling Point (K)":"119.93","Specific Heat Capacity (J/g K)":0.248,"Electronegativity":"3.00","Abundance in Earth's crust (mg/kg)":"1\\u00d710\\u22124","Origin":"primordial","Standard State at Room Temperature":"Gas"}
{"Name":"Rubidium","Atomic Number (Z)":37,"Formula":"Rb","Standard Atomic weight (Da)":"85.468","Origin of name":"Latin rubidus 'deep red'","Group":"1","Group Block":"s-block","Period":5,"Density (g/cm^3)":"1.532","Melting Point (K)":"312.46","Boiling Point (K)":"961","Specific Heat Capacity (J/g K)":0.363,"Electronegativity":"0.82","Abundance in Earth's crust (mg/kg)":"90","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Strontium","Atomic Number (Z)":38,"Formula":"Sr","Standard Atomic weight (Da)":"87.62","Origin of name":"Strontian, a village in Scotland, where it was found","Group":"2","Group Block":"s-block","Period":5,"Density (g/cm^3)":"2.64","Melting Point (K)":"1050","Boiling Point (K)":"1655","Specific Heat Capacity (J/g K)":0.301,"Electronegativity":"0.95","Abundance in Earth's crust (mg/kg)":"370","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Yttrium","Atomic Number (Z)":39,"Formula":"Y","Standard Atomic weight (Da)":"88.906","Origin of name":"Ytterby, Sweden, where it was found; see terbium, erbium, ytterbium","Group":"3","Group Block":"d-block","Period":5,"Density (g/cm^3)":"4.472","Melting Point (K)":"1799","Boiling Point (K)":"3609","Specific Heat Capacity (J/g K)":0.298,"Electronegativity":"1.22","Abundance in Earth's crust (mg/kg)":"33","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Zirconium","Atomic Number (Z)":40,"Formula":"Zr","Standard Atomic weight (Da)":"91.224","Origin of name":"Zircon, mineral, from Persian zargun 'gold-hued'","Group":"4","Group Block":"d-block","Period":5,"Density (g/cm^3)":"6.52","Melting Point (K)":"2128","Boiling Point (K)":"4682","Specific Heat Capacity (J/g K)":0.278,"Electronegativity":"1.33","Abundance in Earth's crust (mg/kg)":"165","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Niobium","Atomic Number (Z)":41,"Formula":"Nb","Standard Atomic weight (Da)":"92.906","Origin of name":"Niobe, daughter of king Tantalus in Greek myth; see tantalum","Group":"5","Group Block":"d-block","Period":5,"Density (g/cm^3)":"8.57","Melting Point (K)":"2750","Boiling Point (K)":"5017","Specific Heat Capacity (J/g K)":0.265,"Electronegativity":"1.6","Abundance in Earth's crust (mg/kg)":"20","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Molybdenum","Atomic Number (Z)":42,"Formula":"Mo","Standard Atomic weight (Da)":"95.95","Origin of name":"Greek mol\\u00fdbdaina \\'piece of lead\\', from m\\u00f3lybdos \\'lead\\', due to confusion with lead ore galena (PbS)","Group":"6","Group Block":"d-block","Period":5,"Density (g/cm^3)":"10.28","Melting Point (K)":"2896","Boiling Point (K)":"4912","Specific Heat Capacity (J/g K)":0.251,"Electronegativity":"2.16","Abundance in Earth's crust (mg/kg)":"1.2","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Technetium","Atomic Number (Z)":43,"Formula":"Tc","Standard Atomic weight (Da)":"[97][a]","Origin of name":"Greek tekhn\\u0113t\\u00f3s \\'artificial\\'","Group":"7","Group Block":"d-block","Period":5,"Density (g/cm^3)":"11","Melting Point (K)":"2430","Boiling Point (K)":"4538","Electronegativity":"1.9","Abundance in Earth's crust (mg/kg)":"~\\u00a03\\u00d710\\u22129","Origin":"from decay","Standard State at Room Temperature":"Solid"}
{"Name":"Ruthenium","Atomic Number (Z)":44,"Formula":"Ru","Standard Atomic weight (Da)":"101.07","Origin of name":"Neo-Latin Ruthenia 'Russia'","Group":"8","Group Block":"d-block","Period":5,"Density (g/cm^3)":"12.45","Melting Point (K)":"2607","Boiling Point (K)":"4423","Specific Heat Capacity (J/g K)":0.238,"Electronegativity":"2.2","Abundance in Earth's crust (mg/kg)":"0.001","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Rhodium","Atomic Number (Z)":45,"Formula":"Rh","Standard Atomic weight (Da)":"102.91","Origin of name":"Greek rhod\\u00f3eis \\'rose-colored\\', from rh\\u00f3don \\'rose\\'","Group":"9","Group Block":"d-block","Period":5,"Density (g/cm^3)":"12.41","Melting Point (K)":"2237","Boiling Point (K)":"3968","Specific Heat Capacity (J/g K)":0.243,"Electronegativity":"2.28","Abundance in Earth's crust (mg/kg)":"0.001","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Palladium","Atomic Number (Z)":46,"Formula":"Pd","Standard Atomic weight (Da)":"106.42","Origin of name":"Pallas, asteroid, then considered a planet","Group":"10","Group Block":"d-block","Period":5,"Density (g/cm^3)":"12.023","Melting Point (K)":"1828.05","Boiling Point (K)":"3236","Specific Heat Capacity (J/g K)":0.244,"Electronegativity":"2.20","Abundance in Earth's crust (mg/kg)":"0.015","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Silver","Atomic Number (Z)":47,"Formula":"Ag","Standard Atomic weight (Da)":"107.87","Origin of name":"English, from Proto-Germanic\\u00a0\\u00b7 \\u00a0Symbol Ag, from Latin argentum","Group":"11","Group Block":"d-block","Period":5,"Density (g/cm^3)":"10.49","Melting Point (K)":"1234.93","Boiling Point (K)":"2435","Specific Heat Capacity (J/g K)":0.235,"Electronegativity":"1.93","Abundance in Earth's crust (mg/kg)":"0.075","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Cadmium","Atomic Number (Z)":48,"Formula":"Cd","Standard Atomic weight (Da)":"112.41","Origin of name":"Neo-Latin cadmia 'calamine', from King Cadmus, mythic founder of Thebes","Group":"12","Group Block":"d-block","Period":5,"Density (g/cm^3)":"8.65","Melting Point (K)":"594.22","Boiling Point (K)":"1040","Specific Heat Capacity (J/g K)":0.232,"Electronegativity":"1.69","Abundance in Earth's crust (mg/kg)":"0.159","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Indium","Atomic Number (Z)":49,"Formula":"In","Standard Atomic weight (Da)":"114.82","Origin of name":"Latin indicum 'indigo', the blue color found in its spectrum","Group":"13","Group Block":"p-block","Period":5,"Density (g/cm^3)":"7.31","Melting Point (K)":"429.75","Boiling Point (K)":"2345","Specific Heat Capacity (J/g K)":0.233,"Electronegativity":"1.78","Abundance in Earth's crust (mg/kg)":"0.25","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Tin","Atomic Number (Z)":50,"Formula":"Sn","Standard Atomic weight (Da)":"118.71","Origin of name":"English, from Proto-Germanic\\u00a0\\u00b7 \\u00a0Symbol Sn, from Latin stannum","Group":"14","Group Block":"p-block","Period":5,"Density (g/cm^3)":"7.265","Melting Point (K)":"505.08","Boiling Point (K)":"2875","Specific Heat Capacity (J/g K)":0.228,"Electronegativity":"1.96","Abundance in Earth's crust (mg/kg)":"2.3","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Antimony","Atomic Number (Z)":51,"Formula":"Sb","Standard Atomic weight (Da)":"121.76","Origin of name":"Latin antimonium, of unclear origin: folk etymologies suggest Greek ant\\u00ed \\'against\\' + m\\u00f3nos \\'alone\\', or Old French anti-moine \\'monk\\'s bane\\', but could be from or related to Arabic \\u02bei\\u1e6fmid \\'antimony\\'\\u00a0\\u00b7 \\u00a0Symbol Sb, from Latin stibium \\'stibnite\\'","Group":"15","Group Block":"p-block","Period":5,"Density (g/cm^3)":"6.697","Melting Point (K)":"903.78","Boiling Point (K)":"1860","Specific Heat Capacity (J/g K)":0.207,"Electronegativity":"2.05","Abundance in Earth's crust (mg/kg)":"0.2","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Tellurium","Atomic Number (Z)":52,"Formula":"Te","Standard Atomic weight (Da)":"127.60","Origin of name":"Latin tellus 'ground, earth'","Group":"16","Group Block":"p-block","Period":5,"Density (g/cm^3)":"6.24","Melting Point (K)":"722.66","Boiling Point (K)":"1261","Specific Heat Capacity (J/g K)":0.202,"Electronegativity":"2.1","Abundance in Earth's crust (mg/kg)":"0.001","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Iodine","Atomic Number (Z)":53,"Formula":"I","Standard Atomic weight (Da)":"126.90","Origin of name":"French iode, from Greek ioeid\\u1e17s \\'violet\\'","Group":"17","Group Block":"p-block","Period":5,"Density (g/cm^3)":"4.933","Melting Point (K)":"386.85","Boiling Point (K)":"457.4","Specific Heat Capacity (J/g K)":0.214,"Electronegativity":"2.66","Abundance in Earth's crust (mg/kg)":"0.45","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Xenon","Atomic Number (Z)":54,"Formula":"Xe","Standard Atomic weight (Da)":"131.29","Origin of name":"Greek x\\u00e9non, neuter of x\\u00e9nos \\'strange, foreign\\'","Group":"18","Group Block":"p-block","Period":5,"Density (g/cm^3)":"0.005894","Melting Point (K)":"161.4","Boiling Point (K)":"165.03","Specific Heat Capacity (J/g K)":0.158,"Electronegativity":"2.60","Abundance in Earth's crust (mg/kg)":"3\\u00d710\\u22125","Origin":"primordial","Standard State at Room Temperature":"Gas"}
{"Name":"Caesium","Atomic Number (Z)":55,"Formula":"Cs","Standard Atomic weight (Da)":"132.91","Origin of name":"Latin caesius 'sky-blue'","Group":"1","Group Block":"s-block","Period":6,"Density (g/cm^3)":"1.93","Melting Point (K)":"301.59","Boiling Point (K)":"944","Specific Heat Capacity (J/g K)":0.242,"Electronegativity":"0.79","Abundance in Earth's crust (mg/kg)":"3","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Barium","Atomic Number (Z)":56,"Formula":"Ba","Standard Atomic weight (Da)":"137.33","Origin of name":"Greek bar\\u00fds \\'heavy\\'","Group":"2","Group Block":"s-block","Period":6,"Density (g/cm^3)":"3.51","Melting Point (K)":"1000","Boiling Point (K)":"2170","Specific Heat Capacity (J/g K)":0.204,"Electronegativity":"0.89","Abundance in Earth's crust (mg/kg)":"425","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Lanthanum","Atomic Number (Z)":57,"Formula":"La","Standard Atomic weight (Da)":"138.91","Origin of name":"Greek lanth\\u00e1nein \\'to lie hidden\\'","Group":"f-block groups","Group Block":"f-block","Period":6,"Density (g/cm^3)":"6.162","Melting Point (K)":"1193","Boiling Point (K)":"3737","Specific Heat Capacity (J/g K)":0.195,"Electronegativity":"1.1","Abundance in Earth's crust (mg/kg)":"39","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Cerium","Atomic Number (Z)":58,"Formula":"Ce","Standard Atomic weight (Da)":"140.12","Origin of name":"Ceres (dwarf planet), then considered a planet","Group":"f-block groups","Group Block":"f-block","Period":6,"Density (g/cm^3)":"6.770","Melting Point (K)":"1068","Boiling Point (K)":"3716","Specific Heat Capacity (J/g K)":0.192,"Electronegativity":"1.12","Abundance in Earth's crust (mg/kg)":"66.5","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Praseodymium","Atomic Number (Z)":59,"Formula":"Pr","Standard Atomic weight (Da)":"140.91","Origin of name":"Greek pr\\u00e1sios d\\u00eddymos \\'green twin\\'","Group":"f-block groups","Group Block":"f-block","Period":6,"Density (g/cm^3)":"6.77","Melting Point (K)":"1208","Boiling Point (K)":"3793","Specific Heat Capacity (J/g K)":0.193,"Electronegativity":"1.13","Abundance in Earth's crust (mg/kg)":"9.2","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Neodymium","Atomic Number (Z)":60,"Formula":"Nd","Standard Atomic weight (Da)":"144.24","Origin of name":"Greek n\\u00e9os d\\u00eddymos \\'new twin\\'","Group":"f-block groups","Group Block":"f-block","Period":6,"Density (g/cm^3)":"7.01","Melting Point (K)":"1297","Boiling Point (K)":"3347","Specific Heat Capacity (J/g K)":0.19,"Electronegativity":"1.14","Abundance in Earth's crust (mg/kg)":"41.5","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Promethium","Atomic Number (Z)":61,"Formula":"Pm","Standard Atomic weight (Da)":"[145]","Origin of name":"Prometheus, a Titan","Group":"f-block groups","Group Block":"f-block","Period":6,"Density (g/cm^3)":"7.26","Melting Point (K)":"1315","Boiling Point (K)":"3273","Electronegativity":"1.13","Abundance in Earth's crust (mg/kg)":"2\\u00d710\\u221219","Origin":"from decay","Standard State at Room Temperature":"Solid"}
{"Name":"Samarium","Atomic Number (Z)":62,"Formula":"Sm","Standard Atomic weight (Da)":"150.36","Origin of name":"Samarskite, a mineral named after V. Samarsky-Bykhovets, Russian mine official","Group":"f-block groups","Group Block":"f-block","Period":6,"Density (g/cm^3)":"7.52","Melting Point (K)":"1345","Boiling Point (K)":"2067","Specific Heat Capacity (J/g K)":0.197,"Electronegativity":"1.17","Abundance in Earth's crust (mg/kg)":"7.05","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Europium","Atomic Number (Z)":63,"Formula":"Eu","Standard Atomic weight (Da)":"151.96","Origin of name":"Europe","Group":"f-block groups","Group Block":"f-block","Period":6,"Density (g/cm^3)":"5.244","Melting Point (K)":"1099","Boiling Point (K)":"1802","Specific Heat Capacity (J/g K)":0.182,"Electronegativity":"1.2","Abundance in Earth's crust (mg/kg)":"2","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Gadolinium","Atomic Number (Z)":64,"Formula":"Gd","Standard Atomic weight (Da)":"157.25","Origin of name":"Gadolinite, a mineral named after Johan Gadolin, Finnish chemist, physicist and mineralogist","Group":"f-block groups","Group Block":"f-block","Period":6,"Density (g/cm^3)":"7.90","Melting Point (K)":"1585","Boiling Point (K)":"3546","Specific Heat Capacity (J/g K)":0.236,"Electronegativity":"1.2","Abundance in Earth's crust (mg/kg)":"6.2","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Terbium","Atomic Number (Z)":65,"Formula":"Tb","Standard Atomic weight (Da)":"158.93","Origin of name":"Ytterby, Sweden, where it was found; see yttrium, erbium, ytterbium","Group":"f-block groups","Group Block":"f-block","Period":6,"Density (g/cm^3)":"8.23","Melting Point (K)":"1629","Boiling Point (K)":"3503","Specific Heat Capacity (J/g K)":0.182,"Electronegativity":"1.2","Abundance in Earth's crust (mg/kg)":"1.2","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Dysprosium","Atomic Number (Z)":66,"Formula":"Dy","Standard Atomic weight (Da)":"162.50","Origin of name":"Greek dyspr\\u00f3sitos \\'hard to get\\'","Group":"f-block groups","Group Block":"f-block","Period":6,"Density (g/cm^3)":"8.540","Melting Point (K)":"1680","Boiling Point (K)":"2840","Specific Heat Capacity (J/g K)":0.17,"Electronegativity":"1.22","Abundance in Earth's crust (mg/kg)":"5.2","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Holmium","Atomic Number (Z)":67,"Formula":"Ho","Standard Atomic weight (Da)":"164.93","Origin of name":"Neo-Latin Holmia 'Stockholm'","Group":"f-block groups","Group Block":"f-block","Period":6,"Density (g/cm^3)":"8.79","Melting Point (K)":"1734","Boiling Point (K)":"2993","Specific Heat Capacity (J/g K)":0.165,"Electronegativity":"1.23","Abundance in Earth's crust (mg/kg)":"1.3","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Erbium","Atomic Number (Z)":68,"Formula":"Er","Standard Atomic weight (Da)":"167.26","Origin of name":"Ytterby, where it was found; see yttrium, terbium, ytterbium","Group":"f-block groups","Group Block":"f-block","Period":6,"Density (g/cm^3)":"9.066","Melting Point (K)":"1802","Boiling Point (K)":"3141","Specific Heat Capacity (J/g K)":0.168,"Electronegativity":"1.24","Abundance in Earth's crust (mg/kg)":"3.5","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Thulium","Atomic Number (Z)":69,"Formula":"Tm","Standard Atomic weight (Da)":"168.93","Origin of name":"Thule, the ancient name for an unclear northern location","Group":"f-block groups","Group Block":"f-block","Period":6,"Density (g/cm^3)":"9.32","Melting Point (K)":"1818","Boiling Point (K)":"2223","Specific Heat Capacity (J/g K)":0.16,"Electronegativity":"1.25","Abundance in Earth's crust (mg/kg)":"0.52","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Ytterbium","Atomic Number (Z)":70,"Formula":"Yb","Standard Atomic weight (Da)":"173.05","Origin of name":"Ytterby, where it was found; see yttrium, terbium, erbium","Group":"f-block groups","Group Block":"f-block","Period":6,"Density (g/cm^3)":"6.90","Melting Point (K)":"1097","Boiling Point (K)":"1469","Specific Heat Capacity (J/g K)":0.155,"Electronegativity":"1.1","Abundance in Earth's crust (mg/kg)":"3.2","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Lutetium","Atomic Number (Z)":71,"Formula":"Lu","Standard Atomic weight (Da)":"174.97","Origin of name":"Latin Lutetia 'Paris'","Group":"3","Group Block":"d-block","Period":6,"Density (g/cm^3)":"9.841","Melting Point (K)":"1925","Boiling Point (K)":"3675","Specific Heat Capacity (J/g K)":0.154,"Electronegativity":"1.27","Abundance in Earth's crust (mg/kg)":"0.8","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Hafnium","Atomic Number (Z)":72,"Formula":"Hf","Standard Atomic weight (Da)":"178.49","Origin of name":"Neo-Latin Hafnia 'Copenhagen' (from Danish havn, harbor)","Group":"4","Group Block":"d-block","Period":6,"Density (g/cm^3)":"13.31","Melting Point (K)":"2506","Boiling Point (K)":"4876","Specific Heat Capacity (J/g K)":0.144,"Electronegativity":"1.3","Abundance in Earth's crust (mg/kg)":"3","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Tantalum","Atomic Number (Z)":73,"Formula":"Ta","Standard Atomic weight (Da)":"180.95","Origin of name":"King Tantalus, father of Niobe in Greek myth; see niobium","Group":"5","Group Block":"d-block","Period":6,"Density (g/cm^3)":"16.69","Melting Point (K)":"3290","Boiling Point (K)":"5731","Specific Heat Capacity (J/g K)":0.14,"Electronegativity":"1.5","Abundance in Earth's crust (mg/kg)":"2","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Tungsten","Atomic Number (Z)":74,"Formula":"W","Standard Atomic weight (Da)":"183.84","Origin of name":"Swedish tung sten \\'heavy stone\\'\\u00a0\\u00b7 \\u00a0Symbol W, from Wolfram, from Middle High German wolf-rahm \\'wolf\\'s foam\\' describing the mineral wolframite[5]","Group":"6","Group Block":"d-block","Period":6,"Density (g/cm^3)":"19.25","Melting Point (K)":"3695","Boiling Point (K)":"5828","Specific Heat Capacity (J/g K)":0.132,"Electronegativity":"2.36","Abundance in Earth's crust (mg/kg)":"1.3","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Rhenium","Atomic Number (Z)":75,"Formula":"Re","Standard Atomic weight (Da)":"186.21","Origin of name":"Latin Rhenus 'Rhine'","Group":"7","Group Block":"d-block","Period":6,"Density (g/cm^3)":"21.02","Melting Point (K)":"3459","Boiling Point (K)":"5869","Specific Heat Capacity (J/g K)":0.137,"Electronegativity":"1.9","Abundance in Earth's crust (mg/kg)":"7\\u00d710\\u22124","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Osmium","Atomic Number (Z)":76,"Formula":"Os","Standard Atomic weight (Da)":"190.23","Origin of name":"Greek osm\\u1e17 \\'smell\\'","Group":"8","Group Block":"d-block","Period":6,"Density (g/cm^3)":"22.59","Melting Point (K)":"3306","Boiling Point (K)":"5285","Specific Heat Capacity (J/g K)":0.13,"Electronegativity":"2.2","Abundance in Earth's crust (mg/kg)":"0.002","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Iridium","Atomic Number (Z)":77,"Formula":"Ir","Standard Atomic weight (Da)":"192.22","Origin of name":"Iris, Greek goddess of rainbow","Group":"9","Group Block":"d-block","Period":6,"Density (g/cm^3)":"22.56","Melting Point (K)":"2719","Boiling Point (K)":"4701","Specific Heat Capacity (J/g K)":0.131,"Electronegativity":"2.20","Abundance in Earth's crust (mg/kg)":"0.001","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Platinum","Atomic Number (Z)":78,"Formula":"Pt","Standard Atomic weight (Da)":"195.08","Origin of name":"Spanish platina 'little silver', from plata 'silver'","Group":"10","Group Block":"d-block","Period":6,"Density (g/cm^3)":"21.45","Melting Point (K)":"2041.4","Boiling Point (K)":"4098","Specific Heat Capacity (J/g K)":0.133,"Electronegativity":"2.28","Abundance in Earth's crust (mg/kg)":"0.005","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Gold","Atomic Number (Z)":79,"Formula":"Au","Standard Atomic weight (Da)":"196.97","Origin of name":"English, from same Proto-Indo-European root as \\'yellow\\'\\u00a0\\u00b7 \\u00a0Symbol Au, from Latin aurum","Group":"11","Group Block":"d-block","Period":6,"Density (g/cm^3)":"19.3","Melting Point (K)":"1337.33","Boiling Point (K)":"3129","Specific Heat Capacity (J/g K)":0.129,"Electronegativity":"2.54","Abundance in Earth's crust (mg/kg)":"0.004","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Mercury","Atomic Number (Z)":80,"Formula":"Hg","Standard Atomic weight (Da)":"200.59","Origin of name":"Mercury, Roman god of commerce, communication, and luck, known for his speed and mobility\\u00a0\\u00b7 \\u00a0Symbol Hg, from Latin hydrargyrum, from Greek hydr\\u00e1rgyros \\'water-silver\\'","Group":"12","Group Block":"d-block","Period":6,"Density (g/cm^3)":"13.534","Melting Point (K)":"234.43","Boiling Point (K)":"629.88","Specific Heat Capacity (J/g K)":0.14,"Electronegativity":"2.00","Abundance in Earth's crust (mg/kg)":"0.085","Origin":"primordial","Standard State at Room Temperature":"Liquid"}
{"Name":"Thallium","Atomic Number (Z)":81,"Formula":"Tl","Standard Atomic weight (Da)":"204.38","Origin of name":"Greek thall\\u00f3s \\'green shoot / twig\\'","Group":"13","Group Block":"p-block","Period":6,"Density (g/cm^3)":"11.85","Melting Point (K)":"577","Boiling Point (K)":"1746","Specific Heat Capacity (J/g K)":0.129,"Electronegativity":"1.62","Abundance in Earth's crust (mg/kg)":"0.85","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Lead","Atomic Number (Z)":82,"Formula":"Pb","Standard Atomic weight (Da)":"207.2","Origin of name":"English, from Proto-Celtic *\\u0278loudom, from a root meaning \\'flow\\'\\u00a0\\u00b7 \\u00a0Symbol Pb, from Latin plumbum","Group":"14","Group Block":"p-block","Period":6,"Density (g/cm^3)":"11.34","Melting Point (K)":"600.61","Boiling Point (K)":"2022","Specific Heat Capacity (J/g K)":0.129,"Electronegativity":"1.87 (2+)2.33 (4+)","Abundance in Earth's crust (mg/kg)":"14","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Bismuth","Atomic Number (Z)":83,"Formula":"Bi","Standard Atomic weight (Da)":"208.98","Origin of name":"German Wismut, via Latin and Arabic from Greek psim\\u00fathion \\'white lead\\'","Group":"15","Group Block":"p-block","Period":6,"Density (g/cm^3)":"9.78","Melting Point (K)":"544.7","Boiling Point (K)":"1837","Specific Heat Capacity (J/g K)":0.122,"Electronegativity":"2.02","Abundance in Earth's crust (mg/kg)":"0.009","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Polonium","Atomic Number (Z)":84,"Formula":"Po","Standard Atomic weight (Da)":"[209][a]","Origin of name":"Latin Polonia 'Poland', home country of discoverer Marie Curie","Group":"16","Group Block":"p-block","Period":6,"Density (g/cm^3)":"9.196","Melting Point (K)":"527","Boiling Point (K)":"1235","Electronegativity":"2.0","Abundance in Earth's crust (mg/kg)":"2\\u00d710\\u221210","Origin":"from decay","Standard State at Room Temperature":"Solid"}
{"Name":"Astatine","Atomic Number (Z)":85,"Formula":"At","Standard Atomic weight (Da)":"[210]","Origin of name":"Greek \\u00e1statos \\'unstable\\'; it has no stable isotopes","Group":"17","Group Block":"p-block","Period":6,"Density (g/cm^3)":"(8.91-8.95)","Melting Point (K)":"575","Boiling Point (K)":"610","Electronegativity":"2.2","Abundance in Earth's crust (mg/kg)":"3\\u00d710\\u221220","Origin":"from decay","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Radon","Atomic Number (Z)":86,"Formula":"Rn","Standard Atomic weight (Da)":"[222]","Origin of name":"Radium emanation, originally the name of 222Rn","Group":"18","Group Block":"p-block","Period":6,"Density (g/cm^3)":"0.00973","Melting Point (K)":"202","Boiling Point (K)":"211.3","Specific Heat Capacity (J/g K)":0.094,"Electronegativity":"2.2","Abundance in Earth's crust (mg/kg)":"4\\u00d710\\u221213","Origin":"from decay","Standard State at Room Temperature":"Gas"}
{"Name":"Francium","Atomic Number (Z)":87,"Formula":"Fr","Standard Atomic weight (Da)":"[223]","Origin of name":"France, home country of discoverer Marguerite Perey","Group":"1","Group Block":"s-block","Period":7,"Density (g/cm^3)":"(2.48)","Melting Point (K)":"281","Boiling Point (K)":"890","Electronegativity":">0.79[6]","Abundance in Earth's crust (mg/kg)":"~\\u00a01\\u00d710\\u221218","Origin":"from decay","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Radium","Atomic Number (Z)":88,"Formula":"Ra","Standard Atomic weight (Da)":"[226]","Origin of name":"Coined in French by discoverer Marie Curie, from Latin radius 'ray'","Group":"2","Group Block":"s-block","Period":7,"Density (g/cm^3)":"5.5","Melting Point (K)":"973","Boiling Point (K)":"2010","Specific Heat Capacity (J/g K)":0.094,"Electronegativity":"0.9","Abundance in Earth's crust (mg/kg)":"9\\u00d710\\u22127","Origin":"from decay","Standard State at Room Temperature":"Solid"}
{"Name":"Actinium","Atomic Number (Z)":89,"Formula":"Ac","Standard Atomic weight (Da)":"[227]","Origin of name":"Greek akt\\u00eds \\'ray\\'","Group":"f-block groups","Group Block":"f-block","Period":7,"Density (g/cm^3)":"10","Melting Point (K)":"1323","Boiling Point (K)":"3471","Specific Heat Capacity (J/g K)":0.12,"Electronegativity":"1.1","Abundance in Earth's crust (mg/kg)":"5.5\\u00d710\\u221210","Origin":"from decay","Standard State at Room Temperature":"Solid"}
{"Name":"Thorium","Atomic Number (Z)":90,"Formula":"Th","Standard Atomic weight (Da)":"232.04","Origin of name":"Thor, the Norse god of thunder","Group":"f-block groups","Group Block":"f-block","Period":7,"Density (g/cm^3)":"11.7","Melting Point (K)":"2115","Boiling Point (K)":"5061","Specific Heat Capacity (J/g K)":0.113,"Electronegativity":"1.3","Abundance in Earth's crust (mg/kg)":"9.6","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Protactinium","Atomic Number (Z)":91,"Formula":"Pa","Standard Atomic weight (Da)":"231.04","Origin of name":"English prefix proto- (from Greek pr\\u00f4tos \\'first, before\\') + actinium; protactinium decays into actinium.","Group":"f-block groups","Group Block":"f-block","Period":7,"Density (g/cm^3)":"15.37","Melting Point (K)":"1841","Boiling Point (K)":"4300","Electronegativity":"1.5","Abundance in Earth's crust (mg/kg)":"1.4\\u00d710\\u22126","Origin":"from decay","Standard State at Room Temperature":"Solid"}
{"Name":"Uranium","Atomic Number (Z)":92,"Formula":"U","Standard Atomic weight (Da)":"238.03","Origin of name":"Uranus, the seventh planet","Group":"f-block groups","Group Block":"f-block","Period":7,"Density (g/cm^3)":"19.1","Melting Point (K)":"1405.3","Boiling Point (K)":"4404","Specific Heat Capacity (J/g K)":0.116,"Electronegativity":"1.38","Abundance in Earth's crust (mg/kg)":"2.7","Origin":"primordial","Standard State at Room Temperature":"Solid"}
{"Name":"Neptunium","Atomic Number (Z)":93,"Formula":"Np","Standard Atomic weight (Da)":"[237]","Origin of name":"Neptune, the eighth planet","Group":"f-block groups","Group Block":"f-block","Period":7,"Density (g/cm^3)":"20.45","Melting Point (K)":"917","Boiling Point (K)":"4273","Electronegativity":"1.36","Abundance in Earth's crust (mg/kg)":"\\u2264\\u00a03\\u00d710\\u221212","Origin":"from decay","Standard State at Room Temperature":"Solid"}
{"Name":"Plutonium","Atomic Number (Z)":94,"Formula":"Pu","Standard Atomic weight (Da)":"[244]","Origin of name":"Pluto, dwarf planet, then considered a planet","Group":"f-block groups","Group Block":"f-block","Period":7,"Density (g/cm^3)":"19.85","Melting Point (K)":"912.5","Boiling Point (K)":"3501","Electronegativity":"1.28","Abundance in Earth's crust (mg/kg)":"\\u2264\\u00a03\\u00d710\\u221211","Origin":"from decay","Standard State at Room Temperature":"Solid"}
{"Name":"Americium","Atomic Number (Z)":95,"Formula":"Am","Standard Atomic weight (Da)":"[243]","Origin of name":"Americas, where the element was first synthesized, by analogy with its homolog europium","Group":"f-block groups","Group Block":"f-block","Period":7,"Density (g/cm^3)":"12","Melting Point (K)":"1449","Boiling Point (K)":"2880","Electronegativity":"1.13","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Solid"}
{"Name":"Curium","Atomic Number (Z)":96,"Formula":"Cm","Standard Atomic weight (Da)":"[247]","Origin of name":"Pierre and Marie Curie, physicists and chemists","Group":"f-block groups","Group Block":"f-block","Period":7,"Density (g/cm^3)":"13.51","Melting Point (K)":"1613","Boiling Point (K)":"3383","Electronegativity":"1.28","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Solid"}
{"Name":"Berkelium","Atomic Number (Z)":97,"Formula":"Bk","Standard Atomic weight (Da)":"[247]","Origin of name":"Berkeley, California,  where it was first synthesized","Group":"f-block groups","Group Block":"f-block","Period":7,"Density (g/cm^3)":"14.78","Melting Point (K)":"1259","Boiling Point (K)":"2900","Electronegativity":"1.3","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Solid"}
{"Name":"Californium","Atomic Number (Z)":98,"Formula":"Cf","Standard Atomic weight (Da)":"[251]","Origin of name":"California, where it was first synthesized in LBNL","Group":"f-block groups","Group Block":"f-block","Period":7,"Density (g/cm^3)":"15.1","Melting Point (K)":"1173","Boiling Point (K)":"(1743)[b]","Electronegativity":"1.3","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Solid"}
{"Name":"Einsteinium","Atomic Number (Z)":99,"Formula":"Es","Standard Atomic weight (Da)":"[252]","Origin of name":"Albert Einstein, German physicist","Group":"f-block groups","Group Block":"f-block","Period":7,"Density (g/cm^3)":"8.84","Melting Point (K)":"1133","Boiling Point (K)":"(1269)","Electronegativity":"1.3","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Solid"}
{"Name":"Fermium","Atomic Number (Z)":100,"Formula":"Fm","Standard Atomic weight (Da)":"[257]","Origin of name":"Enrico Fermi, Italian physicist","Group":"f-block groups","Group Block":"f-block","Period":7,"Density (g/cm^3)":"(9.7)[b]","Melting Point (K)":"(1125)[7](1800)[8]","Boiling Point (K)":"","Electronegativity":"1.3","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Mendelevium","Atomic Number (Z)":101,"Formula":"Md","Standard Atomic weight (Da)":"[258]","Origin of name":"Dmitri Mendeleev, Russian chemist who proposed the periodic table","Group":"f-block groups","Group Block":"f-block","Period":7,"Density (g/cm^3)":"(10.3)","Melting Point (K)":"(1100)","Boiling Point (K)":"","Electronegativity":"1.3","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Nobelium","Atomic Number (Z)":102,"Formula":"No","Standard Atomic weight (Da)":"[259]","Origin of name":"Alfred Nobel, Swedish chemist and engineer","Group":"f-block groups","Group Block":"f-block","Period":7,"Density (g/cm^3)":"(9.9)","Melting Point (K)":"(1100)","Boiling Point (K)":"","Electronegativity":"1.3","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Lawrencium","Atomic Number (Z)":103,"Formula":"Lr","Standard Atomic weight (Da)":"[266]","Origin of name":"Ernest Lawrence, American physicist","Group":"3","Group Block":"d-block","Period":7,"Density (g/cm^3)":"(14.4)","Melting Point (K)":"(1900)","Boiling Point (K)":"","Electronegativity":"1.3","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Rutherfordium","Atomic Number (Z)":104,"Formula":"Rf","Standard Atomic weight (Da)":"[267]","Origin of name":"Ernest Rutherford, chemist and physicist from New Zealand","Group":"4","Group Block":"d-block","Period":7,"Density (g/cm^3)":"(17)","Melting Point (K)":"(2400)","Boiling Point (K)":"(5800)","Electronegativity":"","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Dubnium","Atomic Number (Z)":105,"Formula":"Db","Standard Atomic weight (Da)":"[268]","Origin of name":"Dubna, Russia, where it was discovered in JINR","Group":"5","Group Block":"d-block","Period":7,"Density (g/cm^3)":"(21.6)","Melting Point (K)":"","Boiling Point (K)":"","Electronegativity":"","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Seaborgium","Atomic Number (Z)":106,"Formula":"Sg","Standard Atomic weight (Da)":"[267]","Origin of name":"Glenn Seaborg, American chemist","Group":"6","Group Block":"d-block","Period":7,"Density (g/cm^3)":"(23-24)","Melting Point (K)":"","Boiling Point (K)":"","Electronegativity":"","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Bohrium","Atomic Number (Z)":107,"Formula":"Bh","Standard Atomic weight (Da)":"[270]","Origin of name":"Niels Bohr, Danish physicist","Group":"7","Group Block":"d-block","Period":7,"Density (g/cm^3)":"(26-27)","Melting Point (K)":"","Boiling Point (K)":"","Electronegativity":"","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Hassium","Atomic Number (Z)":108,"Formula":"Hs","Standard Atomic weight (Da)":"[271]","Origin of name":"Neo-Latin Hassia 'Hesse', a state in Germany","Group":"8","Group Block":"d-block","Period":7,"Density (g/cm^3)":"(27-29)","Melting Point (K)":"","Boiling Point (K)":"","Electronegativity":"","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Meitnerium","Atomic Number (Z)":109,"Formula":"Mt","Standard Atomic weight (Da)":"[278]","Origin of name":"Lise Meitner, Austrian physicist","Group":"9","Group Block":"d-block","Period":7,"Density (g/cm^3)":"(27-28)","Melting Point (K)":"","Boiling Point (K)":"","Electronegativity":"","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Darmstadtium","Atomic Number (Z)":110,"Formula":"Ds","Standard Atomic weight (Da)":"[281]","Origin of name":"Darmstadt, Germany, where it was first synthesized in the GSI labs","Group":"10","Group Block":"d-block","Period":7,"Density (g/cm^3)":"(26-27)","Melting Point (K)":"","Boiling Point (K)":"","Electronegativity":"","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Roentgenium","Atomic Number (Z)":111,"Formula":"Rg","Standard Atomic weight (Da)":"[282]","Origin of name":"Wilhelm R\\u00f6ntgen, German physicist","Group":"11","Group Block":"d-block","Period":7,"Density (g/cm^3)":"(22-24)","Melting Point (K)":"","Boiling Point (K)":"","Electronegativity":"","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Copernicium","Atomic Number (Z)":112,"Formula":"Cn","Standard Atomic weight (Da)":"[285]","Origin of name":"Nicolaus Copernicus, Polish astronomer","Group":"12","Group Block":"d-block","Period":7,"Density (g/cm^3)":"(14.0)","Melting Point (K)":"(283\\u00b111)","Boiling Point (K)":"(340\\u00b110)[b]","Electronegativity":"","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Nihonium","Atomic Number (Z)":113,"Formula":"Nh","Standard Atomic weight (Da)":"[286]","Origin of name":"Japanese Nihon 'Japan', where it was first synthesized in Riken","Group":"13","Group Block":"p-block","Period":7,"Density (g/cm^3)":"(16)","Melting Point (K)":"(700)","Boiling Point (K)":"(1400)","Electronegativity":"","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Flerovium","Atomic Number (Z)":114,"Formula":"Fl","Standard Atomic weight (Da)":"[289]","Origin of name":"Flerov Laboratory of Nuclear Reactions, part of JINR, where it was synthesized; itself named after Georgy Flyorov, Russian physicist","Group":"14","Group Block":"p-block","Period":7,"Density (g/cm^3)":"(11.4\\u00b10.3)","Melting Point (K)":"(284\\u00b150)[b]","Boiling Point (K)":"","Electronegativity":"","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Moscovium","Atomic Number (Z)":115,"Formula":"Mc","Standard Atomic weight (Da)":"[290]","Origin of name":"Moscow, Russia, where it was first synthesized in JINR","Group":"15","Group Block":"p-block","Period":7,"Density (g/cm^3)":"(13.5)","Melting Point (K)":"(700)","Boiling Point (K)":"(1400)","Electronegativity":"","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Livermorium","Atomic Number (Z)":116,"Formula":"Lv","Standard Atomic weight (Da)":"[293]","Origin of name":"Lawrence Livermore National Laboratory in Livermore, California","Group":"16","Group Block":"p-block","Period":7,"Density (g/cm^3)":"(12.9)","Melting Point (K)":"(700)","Boiling Point (K)":"(1100)","Electronegativity":"","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Tennessine","Atomic Number (Z)":117,"Formula":"Ts","Standard Atomic weight (Da)":"[294]","Origin of name":"Tennessee, US, home to ORNL","Group":"17","Group Block":"p-block","Period":7,"Density (g/cm^3)":"(7.1-7.3)","Melting Point (K)":"(700)","Boiling Point (K)":"(883)","Electronegativity":"","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Unknown Phase"}
{"Name":"Oganesson","Atomic Number (Z)":118,"Formula":"Og","Standard Atomic weight (Da)":"[294]","Origin of name":"Yuri Oganessian, Russian physicist","Group":"18","Group Block":"p-block","Period":7,"Density (g/cm^3)":"(7)","Melting Point (K)":"(325\\u00b115)","Boiling Point (K)":"(450\\u00b110)","Electronegativity":"","Abundance in Earth's crust (mg/kg)":"","Origin":"synthetic","Standard State at Room Temperature":"Unknown Phase"}