### Atomic Data for Sodium (Na)

### Atomic Number = 11

### Atomic Weight = 22.989768

### Reference = E95

    Isotope   Mass       Abundance Spin Mag Moment

    23Na      22.989767  100%      3/2  2.21752

    Na I  Ground State 1s22s22p63s  2S1/2
          Ionization energy  41449.451 cm-1 (5.139076 eV)   Ref. BBLB98

    Na II Ground State 1s22s22p6  1S0
          Ionization energy  381390.2 cm-1 (47.2864 eV)   Ref. MZ81