NIST Physical Measurement Laboratory Handbook of Basic Atomic Spectroscopic Data

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Atomic Data for Antimony (Sb)

Atomic Number = 51

Atomic Weight = 121.75

Reference E95


Isotope    Mass        Abundance Spin Mag Moment

121Sb      120.903821  57.3%     5/2  +3.3592
123Sb      122.904216  42.7%     7/2  +2.5466

 
Sb I  Ground State 1s22s22p63s23p63d104s24p64d105s25p3  4S°3/2
      Ionization energy  69431.34 cm-1 (8.60839 eV)   Ref. BW86
 
Sb II Ground State 1s22s22p63s23p63d104s24p64d105s25p2  3P0
      Ionization energy  134100 cm-1 (16.63 eV)   Ref. C66b