ChemicalElements

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Element Symbol AtomicNumber ChemicalPropertyId OriginOfName Group Period AtomicWeight AtomicWeightUncertainty Density MeltingPoint BoilingPoint HeatCapacity Electronegativity AbundanceInEarthsCrust
Promethium Pm 61 Lan­thanide Prometheus of Greek mythology who stole fire from the Gods and gave it to humans 6 7.26 1315.00 3273.00 1.13 0.00
Radon Rn 86 Noble gas From radium, as it was first detected as an emission from radium during radioactive decay 18 6 0.01 202.00 211.30 0.09 2.20 0.00
Hassium Hs 108 Transition metal Hesse, Germany, where the element was first synthesized 8 7 -40.70 0.00
Bohrium Bh 107 Transition metal Niels Bohr, physicist 7 7 -37.10 0.00
Seaborgium Sg 106 Transition metal Glenn T. Seaborg, scientist 6 7 -35.00 0.00
Dubnium Db 105 Transition metal Dubna, Russia 5 7 -29.30 0.00
Copernicium Cn 112 Post-​transition metal Nicolaus Copernicus, astronomer 12 7 -23.70 357.00 0.00
Rutherfordium Rf 104 Transition metal Ernest Rutherford, chemist and physicist 4 7 -23.20 -2400.00 -5800.00 0.00
Nobelium No 102 Actinide Alfred Nobel, chemist, engineer, inventor of dynamite 7 -9.90 -1100.00 1.30 0.00
Mendelevium Md 101 Actinide Dmitri Mendeleev, chemist and inventor 7 -10.30 -1100.00 1.30 0.00