### Atomic Data for Magnesium (Mg)

### Atomic Number = 12

### Atomic Weight = 24.3050

### Reference = E95

    Isotope   Mass       Abundance Spin Mag Moment

    24Mg      23.985042  78.99%    0
    25Mg      24.985837  10.00%    5/2  -0.85545
    26Mg      25.982593  11.01%    0

    Mg I  Ground State 1s22s22p63s2  1S0
          Ionization energy  61671.05 cm-1 (7.646235 eV)   Ref. KM91a

    Mg II Ground State 1s22s22p63s  2S1/2
          Ionization energy  121267.64 cm-1 (15.03527 eV)   Ref. KM91a