Number of Isotopes: 5
Electron Affinity (kJ/mol): 78.6
First Ionization Energy (kJ/mol): 770
Second Ionization Energy (kJ/mol): Not applicable
Third Ionization Energy (kJ/mol): Not applicable
Electronegativity: 2.36
Polarizability (Å3): 11.1
Atomic Volume (cm3/mol): 9.5
Ionic Radius2- (pm): No data
Ionic Radius1- (pm): No data
Atomic Radius (pm): 139
Ionic Radius1+ (pm): No data
Ionic Radius2+ (pm): No data
Ionic Radius3+ (pm): No data
Common Oxidation Numbers: +4, +6
Other Oxid. Numbers: -2, -1, +1, +2, +3, +5