Number of Isotopes: 3
Electron Affinity (kJ/mol): 48.385
First Ionization Energy (kJ/mol): 418.8
Second Ionization Energy (kJ/mol): 3051.3
Third Ionization Energy (kJ/mol): 4411.3
Electronegativity: 0.82
Polarizability (Å3): 43.4
Atomic Volume (cm3/mol): 45.7
Ionic Radius2- (pm): No data
Ionic Radius1- (pm): No data
Atomic Radius (pm): 227
Ionic Radius1+ (pm): 152
Ionic Radius2+ (pm): No data
Ionic Radius3+ (pm): No data
Common Oxidation Numbers: +1
Other Oxid. Numbers: