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

50Cr      49.946046  4.35%     0    
52Cr      51.940509  83.79%    0    
53Cr      52.940651  9.50%     3/2  -0.47454
54Cr      53.938882  2.36%     0    

 
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