Fermium Fm I

Odd levels	Even levels
5f126s7p 5H6 19 500 ± 2 000 5f116d7s2 5L6 20 000 ± 3 000 5f116d27s 7L10 39 000 ± 3 000 5f126d7p 5I4 43 000 ± 8 000 5f116d3 7L10 66 000 ± 11 000	5f127s2 3H6 0 5f117s27p 5I7 21 000 ± 3 000 5f126d7s 5I5 26 000 ± 3 000 5f116d7s7p 7L10 37 500 ± 3 000 5f127p2 5H6 42 000 ± 5 000 5f126d2 5I4 58 000 ± 11 000 5f116d27p 7M11 66 000 ± 9 000

The identification of the lowest level of Fm I is based on the measurement of its g_J-factor (1.16052 ± 0.00014) by the atomic beam resonance method.(1)

Ionization limit : 52 400 ± 600 cm^-1 (2) S.E.

References:

(1) : L.S. Goodman, H. Diamond, H.E. Stanton and M.S. Fred, Phys. Rev. A, U.S.A., 1971, 9, 473-5.

(2) : J. Sugar, J. chem. Phys., U.S.A., 1974, 60, 4103.