Isotope Mass Abundance Spin Mag Moment
185Re 184.952951 37.40% 5/2 +3.172 187Re 186.955744 62.60% 5/2 +3.2197
Re I Ground State 1s22s22p63s23p63d104s24p64d104f145s25p65d56s2 6S5/2 Ionization energy 63181.6 cm-1 (7.83352 eV) Ref. CS96 Re II Ground State 1s22s22p63s23p63d104s24p64d104f145s25p65d56s 7S3