### Atomic Data for Francium (Fr)

### Atomic Number = 87

### Atomic Weight = 223

### Reference = E95

    Isotope    Mass        Abundance Spin Mag Moment

    212Fr      211.996130  0*        5
    223Fr      223.019733  some      3/2

Notes:
*Note: Although not occuring naturally, the available spectroscopic data is for 212Fr.

    Fr I  Ground State 1s22s22p63s23p63d104s24p64d104f145s25p65d106s26p67s  2S1/2
          Ionization energy  32848.872 cm-1 (4.072741 eV)   Ref. ABDJ90

    Fr II Ground State 1s22s22p63s23p63d104s24p64d104f145s25p65d106s26p6  1S0