Hydrogen vs Platinum

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PropertyH HydrogenPt Platinum
Atomic number178
SymbolHPt
NameHydrogenPlatinum
Categorynonmetaltransition-metal
Standard Atomic Weight1.007975 u195.084 u
Period16
Group110
Blockss
Phase at STPgassolid
Electron configuration1s1[Xe]6s14f145d9
Oxidation states[-1, 1][-3, -2, -1, 0, 1, 2, 3, 4, 5, 6]
Electronegativity (Pauling)2.22.28
Electron affinity0.75419 eV2.1228 eV
Density0.08988 kg/m³2.146000e+4 kg/m³
Melting point-259.34 °C1768.4 °C
Boiling point-252.87 °C3824.85 °C
Discovery year17661735