Isotope Mass Abundance Spin Mag Moment
59Co 58.933198 100% 7/2 +4.627
Co I Ground State 1s22s22p63s23p63d74s2 4F9/2
Ionization energy 63564.6 cm-1 (7.88101 eV) Ref. PG90
Co II Ground State 1s22s22p63s23p63d8 3F4
Ionization energy 137795 cm-1 (17.084 eV) Ref. SC85