### Atomic Data for Cesium (Cs)

### Atomic Number = 55

### Atomic Weight = 132.9054

### Reference = E95

    Isotope    Mass        Abundance Spin Mag Moment

    133Cs      132.905429  100%      7/2  +2.579

    Cs I  Ground State 1s22s22p63s23p63d104s24p64d105s25p66s  2S1/2
          Ionization energy  31406.46769 cm-1 (3.893905 eV)   Ref. WS87

    Cs II Ground State 1s22s22p63s23p63d104s24p64d105s25p6  1S0
          Ionization energy  186777.4 cm-1 (23.15744 eV)   Ref. S81