Number of Isotopes: 1
Electron Affinity (kJ/mol): 45.506
First Ionization Energy (kJ/mol): 375.7
Second Ionization Energy (kJ/mol): 2421.8
Third Ionization Energy (kJ/mol): Not applicable
Electronegativity: 0.79
Polarizability (Å3): 59.6
Atomic Volume (cm3/mol): 70
Ionic Radius2- (pm): No data
Ionic Radius1- (pm): No data
Atomic Radius (pm): 265
Ionic Radius1+ (pm): 181
Ionic Radius2+ (pm): No data
Ionic Radius3+ (pm): No data
Common Oxidation Numbers: +1
Other Oxid. Numbers: