Francium

Atom properties


Radii


Atomic radius (Å): 2.7 [3]
Ionic radius (Å): Fr(I): 1.8 [1]
Electron affinity [M-M-] (kJ/mol): 44.0 [1]


Electron configuration


Ground state: 1s2-2s2-2p6-3s2-3p6-3d10-4s2-4p6-4d10-4f14-5s2-5p6-5d10-6s2-6p6-7s1