NIST Physical Measurement Laboratory Handbook of Basic Atomic Spectroscopic Data

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Atomic Data for Gadolinium (Gd)

Atomic Number = 64

Atomic Weight = 157.25

Reference E95


  Isotope   Mass   Abundance   Spin   Mag Moment 
              
152Gd151.9197860.20%0 
154Gd153.9208612.18%0 
155Gd154.92261814.80%3/2-0.27
156Gd155.92211820.47%0 
157Gd156.92395615.65%3/2-0.36
158Gd157.92409924.84%0 
160Gd159.92704921.86%0 

Gd I  Ground State (1s22s22p63s23p63d104s24p64d105s25p6)4f75d6s2 92
       Ionization energy  49601.45 cm-1 (6.14980 eV)   Ref. MOW98

Gd II Ground State (1s22s22p63s23p63d104s24p64d105s25p6)4f75d6s 105/2
       Ionization energy  97500 cm-1 (12.09 eV)   Ref. SR73