NIST Physical Measurement Laboratory Handbook of Basic Atomic Spectroscopic Data

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Atomic Data for Rubidium (Rb)

Atomic Number = 37

Atomic Weight = 85.4678

Reference E95

  Isotope   Mass   Abundance   Spin   Mag Moment 

Rb I  Ground State 1s22s22p63s23p63d104s24p65s 2S1/2
       Ionization energy  33690.81 cm-1 (4.177128 eV)   Ref. J61b

Rb II Ground State 1s22s22p63s23p63d104s24p6 1S0
       Ionization energy  220105.0 cm-1 (27.2895 eV)   Ref. R75