Tellurium
Electron Configuration: 2,8,18,18,6
Enthalpy of Fusion (kJ mol-1): 13.5
Enthalpy of Vaporisation (kJ mol-1): 104.6
Atomic Radii
Atomic Radius 140 pm
Bohr Radius 123 pm
Covalent Radius 135 pm
Van der Waals 206 pm
Oxidation States
Main Te+4
Other Te-2, Te-1, Te0, Te+2, Te+5, Te+6
Ionisation Energies (kJ mol-1) show graph
M - M+ 869.2
M+ - M2+ 1795
M2+ - M3+ 2698
M3+ - M4+ 3610
M4+ - M5+ 5668
M5+ - M6+ 6822
M6+ - M7+ 13200
M7+ - M8+ 15800
M8+ - M9+ 18500
M9+ - M10+ 21200
Covalent Bonds (kJ mol-1)
Te-H 240
Te-O 268
Te-F 335
Te-Cl 251
Te-Te 235