Silicon
Electron Configuration: 2,8,4
Enthalpy of Fusion (kJ mol-1): 39.6
Enthalpy of Vaporisation (kJ mol-1): 383.3
Atomic Radii
Atomic Radius 110 pm
Bohr Radius 111 pm
Covalent Radius 111 pm
Van der Waals 210 pm
Oxidation States
Main Si+2, Si+4
Other
Ionisation Energies (kJ mol-1) show graph
M - M+ 786.5
M+ - M2+ 1577.1
M2+ - M3+ 3231.4
M3+ - M4+ 4355.5
M4+ - M5+ 16091
M5+ - M6+ 19784
M6+ - M7+ 23786
M7+ - M8+ 29252
M8+ - M9+ 33876
M9+ - M10+ 38732
Covalent Bonds (kJ mol-1)
Si-H 326
Si-C 301
Si-O 486
Si-F 582
Si-Cl 391
Si-Si 226