Niobium vs Palladium

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PropertyNb NiobiumPd Palladium
Atomic number4146
SymbolNbPd
NameNiobiumPalladium
Categorytransition-metaltransition-metal
Standard Atomic Weight92.90637 u106.42 u
Period55
Group510
Blocksd
Phase at STPsolidsolid
Electron configuration[Kr]5s14d4[Kr]4d10
Oxidation states[-3, -1, 0, 1, 2, 3, 4, 5][1, 2, 3, 4, 5]
Electronegativity (Pauling)1.62.2
Electron affinity0.893 eV0.557 eV
Density8570 kg/m³1.200000e+4 kg/m³
Melting point2476.85 °C1554.9 °C
Boiling point4743.85 °C2962.85 °C
Discovery year18011803