Phosphorus vs Niobium

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PropertyP PhosphorusNb Niobium
Atomic number1541
SymbolPNb
NamePhosphorusNiobium
Categorynonmetaltransition-metal
Standard Atomic Weight30.973762 u92.90637 u
Period35
Group155
Blockps
Phase at STPsolidsolid
Electron configuration[Ne]3s23p3[Kr]5s14d4
Oxidation states[-3, -2, -1, 0, 1, 2, 3, 4, 5][-3, -1, 0, 1, 2, 3, 4, 5]
Electronegativity (Pauling)2.191.6
Electron affinity0.7466 eV0.893 eV
Density1820 kg/m³8570 kg/m³
Melting point44.15 °C2476.85 °C
Boiling point280.5 °C4743.85 °C
Discovery year16691801