Studies of electronic configurations in the emission spectra of lanthanides and actinides: application to the interpretation of Es I and Es II, predictions for Fm I

Predicted energy levels of Fm I (odd parity) as derived from Racah-Slater studies of configurations with extrapolated radial parameters. The lowest multiplets in 5f127s7p and 5f116d7s2 are drawn in the dominant J-J coupling.