### Atomic Data for Terbium (Tb)

### Atomic Number = 65

### Atomic Weight = 158.92534

### Reference = E95

    Isotope    Mass        Abundance Spin Mag Moment

    159Tb      158.925342  100%      3/2  +1.95

    Tb I  Ground State (1s22s22p63s23p63d104s24p64d105s25p6)4f96s2  6H°15/2
          Ionization energy  47294 cm-1 (5.8638 eV)   Ref. WSPC78

    Tb II Ground State (1s22s22p63s23p63d104s24p64d105s25p6)4f9(6H°15/2)6s  (15/2,1/2)°8
          Ionization energy  92900 cm-1 (11.52 eV)   Ref. SR65