Rhodium vs Palladium

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PropertyRh RhodiumPd Palladium
Atomic number4546
SymbolRhPd
NameRhodiumPalladium
Categorytransition-metaltransition-metal
Standard Atomic Weight102.9055 u106.42 u
Period55
Group910
Blocksd
Phase at STPsolidsolid
Electron configuration[Kr]5s14d8[Kr]4d10
Oxidation states[-3, -1, 1, 2, 3, 4, 5, 6, 7][1, 2, 3, 4, 5]
Electronegativity (Pauling)2.282.2
Electron affinity1.137 eV0.557 eV
Density1.240000e+4 kg/m³1.200000e+4 kg/m³
Melting point1963.85 °C1554.9 °C
Boiling point3694.85 °C2962.85 °C
Discovery year18031803