NIST Physical Measurement Laboratory Handbook of Basic Atomic Spectroscopic Data

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Atomic Data for Lithium (Li)

Atomic Number = 3

Atomic Weight = 6.941

Reference E95

  Isotope   Mass   Abundance   Spin   Mag Moment 

Li I  Ground State 1s22s 2S1/2
       Ionization energy  43487.150 cm-1 (5.391719 eV)   Ref. K87

Li II Ground State 1s2 1S0
       Ionization energy  610078 cm-1 (75.6400 eV)   Ref. DM01