Isotope Mass Abundance Spin Mag Moment
55Mn 54.938047 100% 5/2 +3.4687
Mn I Ground State 1s22s22p63s23p63d54s2 6S5/2
Ionization energy 59959.4 cm-1 (7.43402 eV) Ref. SC85
Mn II Ground State 1s22s22p63s23p63d54s 7S3
Ionization energy 126145.0 cm-1 (15.6400 eV) Ref. SC85