Niobium vs Silver

PropertyNb NiobiumAg Silver
Atomic number4147
SymbolNbAg
NameNiobiumSilver
Categorytransition-metaltransition-metal
Standard Atomic Weight92.90637 u107.8682 u
Period55
Group511
Blockss
Phase at STPsolidsolid
Electron configuration[Kr]5s14d4[Kr]5s14d10
Oxidation states[-3, -1, 0, 1, 2, 3, 4, 5][-2, -1, 0, 1, 2, 3]
Electronegativity (Pauling)1.61.93
Electron affinity0.893 eV1.302 eV
Density8570 kg/m³1.050100e+4 kg/m³
Melting point2476.85 °C961.78 °C
Boiling point4743.85 °C2161.85 °C
Discovery year1801N/A