NIST Physical Measurement Laboratory Handbook of Basic Atomic Spectroscopic Data

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Atomic Data for Calcium (Ca)

Atomic Number = 20

Atomic Weight = 40.078

Reference E95


Isotope   Mass       Abundance Spin Mag Moment

40Ca      39.962591  96.941%   0    
42Ca      41.958618  0.647%    0    
43Ca      42.958766  0.135%    7/2  +1.3173
44Ca      43.955480  2.086%    0    
46Ca      45.953689  0.004%    0    
48Ca      47.952553  0.187%    0    

 
Ca I  Ground State 1s22s22p63s23p64s2  1S0
      Ionization energy  49305.95 cm-1 (6.11316 eV)   Ref. SC85
 
Ca II Ground State 1s22s22p63s23p64s  2S1/2
      Ionization energy  95751.87 cm-1 (11.87172 eV)   Ref. SC85