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
249Cf 249.074844 0 9/2 251Cf 251.079580 0 1/2 252Cf 252.081621 0 0
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