Carbon vs Ruthenium

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PropertyC CarbonRu Ruthenium
Atomic number644
SymbolCRu
NameCarbonRuthenium
Categorynonmetaltransition-metal
Standard Atomic Weight12.0106 u101.07 u
Period25
Group148
Blockps
Phase at STPsolidsolid
Electron configuration[He]2s22p2[Kr]5s14d7
Oxidation states[-4, -3, -2, -1, 0, 1, 2, 3, 4][-4, -2, 1, 2, 3, 4, 5, 6, 7, 8]
Electronegativity (Pauling)2.552.2
Electron affinity1.2621 eV1.05 eV
Density2267 kg/m³1.210000e+4 kg/m³
Melting point3549.85 °C2333.85 °C
Boiling point3824.85 °C4149.85 °C
Discovery year17971828