NIST Physical Measurement Laboratory Handbook of Basic Atomic Spectroscopic Data

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Atomic Data for Californium (Cf)

Atomic Number = 98

Atomic Weight = (251)

Reference E95

  Isotope   Mass   Abundance   Spin   Mag Moment 

Cf I  Ground State 1s22s22p63s23p63d104s24p64d104f145s25p65d106s26p65f107s2 5I8
       Ionization energy  50665 cm-1 (6.2817 eV)   Ref. KDEE97

Cf II Ground State 1s22s22p63s23p63d104s24p64d104f145s25p65d106s26p65f107s (8,1/2)17/2
       Ionization energy  [95000] cm-1 (11.8 eV)   Ref. CNWM70