Number of Isotopes: 3
Electron Affinity (kJ/mol): 72.7711
First Ionization Energy (kJ/mol): 1312
Second Ionization Energy (kJ/mol): Not applicable
Third Ionization Energy (kJ/mol): Not applicable
Electronegativity: 2.2
Polarizability (Å3): 0.7
Atomic Volume (cm3/mol): 14.4
Ionic Radius2- (pm): No data
Ionic Radius1- (pm): No data
Atomic Radius (pm): 37.1
Ionic Radius1+ (pm): No data
Ionic Radius2+ (pm): No data
Ionic Radius3+ (pm): No data
Common Oxidation Numbers:  -1,+1
Other Oxid. Numbers: