Element overview
Francium (Fr) is element 87 with a listed atomic mass of 223 u. It is in group 1 and period 7. Its category is alkali metal.
Atomic properties
Electron configuration: not listed. Electronegativity: not established. Common oxidation states: not listed.
Physical properties
Density: not listed; melting point: not listed; boiling point: not listed. Values depend on conditions, phase and source.