Number of Isotopes: 2
Electron Affinity (kJ/mol): 59.63
First Ionization Energy (kJ/mol): 520.2
Second Ionization Energy (kJ/mol): 7394.4
Third Ionization Energy (kJ/mol): 11814.6
Electronegativity: 0.98
Polarizability (Å3): 24.3
Atomic Volume (cm3/mol): 13
Ionic Radius2- (pm): No data
Ionic Radius1- (pm): No data
Atomic Radius (pm): 152
Ionic Radius1+ (pm): 90
Ionic Radius2+ (pm): No data
Ionic Radius3+ (pm): No data
Common Oxidation Numbers:

+1

Other Oxid. Numbers:

-1