Number of Isotopes: 0
Electron Affinity (kJ/mol): 53
First Ionization Energy (kJ/mol): 702.4
Second Ionization Energy (kJ/mol): 1472.4
Third Ionization Energy (kJ/mol): 2850.2
Electronegativity: 1.9
Polarizability (Å3): 11.4
Atomic Volume (cm3/mol): 8.5
Ionic Radius2- (pm): No data
Ionic Radius1- (pm): No data
Atomic Radius (pm): 136
Ionic Radius1+ (pm): No data
Ionic Radius2+ (pm): No data
Ionic Radius3+ (pm): No data
Common Oxidation Numbers: +4, +7
Other Oxid. Numbers: -3, -1, +1, +2, +3, +5, +6