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 

Sb I  Ground State 1s22s22p63s23p63d104s24p64d105s25p3 43/2
       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