Tantalum vs Platinum

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PropertyTa TantalumPt Platinum
Atomic number7378
SymbolTaPt
NameTantalumPlatinum
Categorytransition-metaltransition-metal
Standard Atomic Weight180.94788 u195.084 u
Period66
Group510
Blockss
Phase at STPsolidsolid
Electron configuration[Xe]6s24f145d3[Xe]6s14f145d9
Oxidation states[-3, -1, 0, 1, 2, 3, 4, 5][-3, -2, -1, 0, 1, 2, 3, 4, 5, 6]
Electronegativity (Pauling)1.52.28
Electron affinity0.322 eV2.1228 eV
Density1.640000e+4 kg/m³2.146000e+4 kg/m³
Melting point3016.85 °C1768.4 °C
Boiling point5457.85 °C3824.85 °C
Discovery year18021735