Isotope Mass Abundance Spin Mag Moment
14N 14.003074 99.63% 1 +0.40376 15N 15.000108 0.37% 1/2 -0.28319
N I Ground State 1s22s22p3 4S°3/2 Ionization energy 117225.7 cm-1 (14.5341 eV) Ref. M75a N II Ground State 1s22s22p2 3P0 Ionization energy 238750.3 cm-1 (29.6013 eV) Ref. E83