Ruthenium vs Platinum

← Back to Periodic Table
PropertyRu RutheniumPt Platinum
Atomic number4478
SymbolRuPt
NameRutheniumPlatinum
Categorytransition-metaltransition-metal
Standard Atomic Weight101.07 u195.084 u
Period56
Group810
Blockss
Phase at STPsolidsolid
Electron configuration[Kr]5s14d7[Xe]6s14f145d9
Oxidation states[-4, -2, 1, 2, 3, 4, 5, 6, 7, 8][-3, -2, -1, 0, 1, 2, 3, 4, 5, 6]
Electronegativity (Pauling)2.22.28
Electron affinity1.05 eV2.1228 eV
Density1.210000e+4 kg/m³2.146000e+4 kg/m³
Melting point2333.85 °C1768.4 °C
Boiling point4149.85 °C3824.85 °C
Discovery year18281735