Aluminum vs Tantalum

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PropertyAl AluminumTa Tantalum
Atomic number1373
SymbolAlTa
NameAluminumTantalum
Categorypost-transition-metaltransition-metal
Standard Atomic Weight26.981538 u180.94788 u
Period36
Group135
Blockps
Phase at STPsolidsolid
Electron configuration[Ne]3s23p1[Xe]6s24f145d3
Oxidation states[-2, -1, 0, 1, 2, 3][-3, -1, 0, 1, 2, 3, 4, 5]
Electronegativity (Pauling)1.611.5
Electron affinity0.4328 eV0.322 eV
Density2700 kg/m³1.640000e+4 kg/m³
Melting point660.287 °C3016.85 °C
Boiling point2518.85 °C5457.85 °C
Discovery year18251802