Phosphorus vs Tantalum

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PropertyP PhosphorusTa Tantalum
Atomic number1573
SymbolPTa
NamePhosphorusTantalum
Categorynonmetaltransition-metal
Standard Atomic Weight30.973762 u180.94788 u
Period36
Group155
Blockps
Phase at STPsolidsolid
Electron configuration[Ne]3s23p3[Xe]6s24f145d3
Oxidation states[-3, -2, -1, 0, 1, 2, 3, 4, 5][-3, -1, 0, 1, 2, 3, 4, 5]
Electronegativity (Pauling)2.191.5
Electron affinity0.7466 eV0.322 eV
Density1820 kg/m³1.640000e+4 kg/m³
Melting point44.15 °C3016.85 °C
Boiling point280.5 °C5457.85 °C
Discovery year16691802