Gadolinium vs Tantalum

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PropertyGd GadoliniumTa Tantalum
Atomic number6473
SymbolGdTa
NameGadoliniumTantalum
Categorylanthanidetransition-metal
Standard Atomic Weight157.25 u180.94788 u
Period66
GroupN/A5
Blockss
Phase at STPsolidsolid
Electron configuration[Xe]6s24f75d1[Xe]6s24f145d3
Oxidation states[0, 1, 2, 3][-3, -1, 0, 1, 2, 3, 4, 5]
Electronegativity (Pauling)1.21.5
Electron affinity0.132 eV0.322 eV
Density7900 kg/m³1.640000e+4 kg/m³
Melting point1312.85 °C3016.85 °C
Boiling point3272.85 °C5457.85 °C
Discovery year18861802