### Atomic Data for Beryllium (Be)

### Atomic Number = 4

### Atomic Weight = 9.01218

### Reference = E95

    Isotope   Mass       Abundance Spin Mag Moment

     9Be      9.012182   100%      3/2  -1.1776
    10Be      10.013534  Trace     0

    Be I  Ground State 1s22s2  1S0
          Ionization energy  75192.64 cm-1 (9.32270 eV)   Ref. KM97

    Be II Ground State 1s22s  2S1/2
          Ionization energy  146882.8 cm-1 (18.21114 eV)   Ref. KM00