NIST Physical Measurement Laboratory Handbook of Basic Atomic Spectroscopic Data

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Atomic Data for Chromium (Cr)

Atomic Number = 24

Atomic Weight = 51.9961

Reference E95

  Isotope   Mass   Abundance   Spin   Mag Moment 

Cr I  Ground State 1s22s22p63s23p63d54s 7S3
       Ionization energy  54575.6 cm-1 (6.76651 eV)   Ref. SC85

Cr II Ground State 1s22s22p63s23p63d5 6S5/2
       Ionization energy  132966 cm-1 (16.4857 eV)   Ref. SC85