ChemicalElements

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Element Symbol AtomicNumber ChemicalPropertyId OriginOfName Group Period AtomicWeight AtomicWeightUncertainty Density MeltingPoint BoilingPoint HeatCapacity Electronegativity AbundanceInEarthsCrust
Iodine I 53 Reactive nonmetal French iode (after the Greek ioeides, 'violet') 17 5 126.90 0.00 4.93 386.85 457.40 0.21 2.66 0.45
Hassium Hs 108 Transition metal Hesse, Germany, where the element was first synthesized 8 7 -40.70 0.00
Holmium Ho 67 Lan­thanide Holmia, the New Latin name for Stockholm 6 164.93 0.00 8.80 1734.00 2993.00 0.17 1.23 1.30
Mercury Hg 80 Post-​transition metal the New Latin name mercurius, named after the Roman god (Hg from former name hydrargyrum, from Greek hydr-, 'water', and argyros, 'silver') 12 6 200.59 0.00 13.53 234.43 629.88 0.14 2.00 0.09
Hafnium Hf 72 Transition metal Hafnia, the New Latin name for Copenhagen 4 6 178.49 0.02 13.31 2506.00 4876.00 0.14 1.30 3.00
Helium He 2 Noble gas the Greek helios, 'sun' 18 1 4.00 0.00 0.00 4.22 5.19 0.01
Hydrogen H 1 Reactive nonmetal composed of the Greek elements hydro- and -gen meaning 'water-forming' 1 1 1.01 0.00 0.00 14.01 20.28 14.30 2.20 1400.00
Germanium Ge 32 Metalloid Germania, the Latin name for Germany 14 4 72.63 0.01 5.32 1211.40 3106.00 0.32 2.01 1.50
Gadolinium Gd 64 Lan­thanide Johan Gadolin, chemist, physicist and mineralogist 6 157.25 0.03 7.90 1585.00 3546.00 0.24 1.20 6.20
Gallium Ga 31 Post-​transition metal Gallia, the Latin name for France 13 4 69.72 0.00 5.91 302.91 2673.00 0.37 1.81 19.00