### Atomic Data for Thallium (Tl)

### Atomic Number = 81

### Atomic Weight = 204.3833

### Reference = E95

    Isotope    Mass        Abundance Spin Mag Moment

    203Tl      202.972320  29.52%    1/2  +1.6223
    205Tl      204.974401  70.48%    1/2  +1.6382

    Tl I  Ground State 1s22s22p63s23p63d104s24p64d104f145s25p65d106s26p  2P1/2
          Ionization energy  49265.91 cm-1 (6.108194 eV)   Ref. BC85

    Tl II Ground State 1s22s22p63s23p63d104s24p64d104f145s25p65d106s2  1S0
          Ionization energy  164765 cm-1 (20.4283 eV)   Ref. M58