Ruthenium vs Tungsten

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PropertyRu RutheniumW Tungsten
Atomic number4474
SymbolRuW
NameRutheniumTungsten
Categorytransition-metaltransition-metal
Standard Atomic Weight101.07 u183.84 u
Period56
Group86
Blockss
Phase at STPsolidsolid
Electron configuration[Kr]5s14d7[Xe]6s24f145d4
Oxidation states[-4, -2, 1, 2, 3, 4, 5, 6, 7, 8][-4, -2, -1, 0, 1, 2, 3, 4, 5, 6]
Electronegativity (Pauling)2.22.36
Electron affinity1.05 eV0.815 eV
Density1.210000e+4 kg/m³1.930000e+4 kg/m³
Melting point2333.85 °C3421.85 °C
Boiling point4149.85 °C5554.85 °C
Discovery year18281781