Carbon vs Technetium

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PropertyC CarbonTc Technetium
Atomic number643
SymbolCTc
NameCarbonTechnetium
Categorynonmetaltransition-metal
Standard Atomic Weight12.0106 u98 u
Period25
Group147
Blockps
Phase at STPsolidsolid
Electron configuration[He]2s22p2[Kr]5s24d5
Oxidation states[-4, -3, -2, -1, 0, 1, 2, 3, 4][-3, -1, 1, 2, 3, 4, 5, 6, 7]
Electronegativity (Pauling)2.551.9
Electron affinity1.2621 eV0.55 eV
Density2267 kg/m³1.100000e+4 kg/m³
Melting point3549.85 °C2156.85 °C
Boiling point3824.85 °C4264.85 °C
Discovery year17971937