Carbon vs Rhodium

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PropertyC CarbonRh Rhodium
Atomic number645
SymbolCRh
NameCarbonRhodium
Categorynonmetaltransition-metal
Standard Atomic Weight12.0106 u102.9055 u
Period25
Group149
Blockps
Phase at STPsolidsolid
Electron configuration[He]2s22p2[Kr]5s14d8
Oxidation states[-4, -3, -2, -1, 0, 1, 2, 3, 4][-3, -1, 1, 2, 3, 4, 5, 6, 7]
Electronegativity (Pauling)2.552.28
Electron affinity1.2621 eV1.137 eV
Density2267 kg/m³1.240000e+4 kg/m³
Melting point3549.85 °C1963.85 °C
Boiling point3824.85 °C3694.85 °C
Discovery year17971803