Carbon vs Gallium

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PropertyC CarbonGa Gallium
Atomic number631
SymbolCGa
NameCarbonGallium
Categorynonmetalpost-transition-metal
Standard Atomic Weight12.0106 u69.723 u
Period24
Group1413
Blockpp
Phase at STPsolidsolid
Electron configuration[He]2s22p2[Ar]4s23d104p1
Oxidation states[-4, -3, -2, -1, 0, 1, 2, 3, 4][-5, -4, -3, -2, -1, 0, 1, 2, 3]
Electronegativity (Pauling)2.551.81
Electron affinity1.2621 eV0.3 eV
Density2267 kg/m³5910 kg/m³
Melting point3549.85 °C29.76 °C
Boiling point3824.85 °C2203.85 °C
Discovery year17971875