Number of Isotopes: 2
Electron Affinity (kJ/mol): 46.885
First Ionization Energy (kJ/mol): 403
Second Ionization Energy (kJ/mol): 2632.1
Third Ionization Energy (kJ/mol): 3859.4
Electronegativity: 0.82
Polarizability (Å3): 47.3
Atomic Volume (cm3/mol): 55.8
Ionic Radius2- (pm): No data
Ionic Radius1- (pm): No data
Atomic Radius (pm): 248
Ionic Radius1+ (pm): 166
Ionic Radius2+ (pm): No data
Ionic Radius3+ (pm): No data
Common Oxidation Numbers: +1
Other Oxid. Numbers: