Ruthenium vs Palladium

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PropertyRu RutheniumPd Palladium
Atomic number4446
SymbolRuPd
NameRutheniumPalladium
Categorytransition-metaltransition-metal
Standard Atomic Weight101.07 u106.42 u
Period55
Group810
Blocksd
Phase at STPsolidsolid
Electron configuration[Kr]5s14d7[Kr]4d10
Oxidation states[-4, -2, 1, 2, 3, 4, 5, 6, 7, 8][1, 2, 3, 4, 5]
Electronegativity (Pauling)2.22.2
Electron affinity1.05 eV0.557 eV
Density1.210000e+4 kg/m³1.200000e+4 kg/m³
Melting point2333.85 °C1554.9 °C
Boiling point4149.85 °C2962.85 °C
Discovery year18281803