Isotope Mass Abundance Spin Mag Moment
19F 18.9984032 100% 1/2 +2.6887
F I Ground State 1s22s22p5 2P°3/2
Ionization energy 140524.5 cm-1 (17.4228 eV) Ref. L49
F II Ground State 1s22s22p4 3P2
Ionization energy 282058.6 cm-1 (34.9708 eV) Ref. P69