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Carbon
Electron Configuration 2,4
Electron Configuration 1s2 2s2 2p2
Electronegativity 2.55
Enthalpy of Fusion 105.0 kJ mol-1
Enthalpy of Vaporisation 710.9 kJ mol-1
Heat Capacity (graphite) 8.517 J mol-1 K-1
Thermal Conductivity (graphite) 119-165 W m-1 K-1
Thermal Expansion ? μm m-1 K-1
Magnetic ordering Diamagnetic
Mohs hardness 1-2 graphite, 10 diamond
Atomic Radii
Atomic Radius 70 pm
Bohr Radius 67 pm
Covalent Radius 77 pm
Van der Waals 170 pm
Oxidation States
Main C-4, C+2, C+4
Other
Ionisation Energies (kJ mol-1) show graph
M - M+ 1086.2
M+ - M2+ 2352
M2+ - M3+ 4620
M3+ - M4+ 6222
M4+ - M5+ 37827
M5+ - M6+ 47270
Covalent Bonds (kJ mol-1)
C-H 411
C-C 348
C=C 614
CC 839
C=N 615
CN 891
C=O 745
CO 1074