Francium
Elemental State Fr
Electron Configuration 1s22s22p63s23p63d104s24p64d104f145s25p65d106s26p67s1
First Ionization Potential 4.073 eV
Electron Affinity 0.46 eV (calculated)
Z*  
Pauling Electronegativity 0.7
Covalent Radius  
Metallic Radius  
Ionic Radius  
van der Waal's Radius  
Melting Point 27 oC
Boiling Point 677 oC
Density  
Other Properties All isotopes are radioactive

223Fr half-life = 21.8 minutes