Number of Isotopes: 3
Electron Affinity (kJ/mol): 121.85
First Ionization Energy (kJ/mol): 1086.4
Second Ionization Energy (kJ/mol): 2352.6
Third Ionization Energy (kJ/mol): 4620.4
Electronegativity: 2.55
Polarizability (Å3): 1.8
Atomic Volume (cm3/mol): 5.3
Ionic Radius2- (pm): No data
Ionic Radius1- (pm): No data
Atomic Radius (pm): 77.2
Ionic Radius1+ (pm): No data
Ionic Radius2+ (pm): No data
Ionic Radius3+ (pm): No data
Common Oxidation Numbers: -4, +4
Other Oxid. Numbers: -3, -2, -1, +1, +2, +3