Leushin A.; Irinyakov E.
(2006)
The positions of the energy levels of free ions of the iron group V 2+, Cr3+, Mn4+, Fe5+, and Co 6+, whose ground configuration is 3d 3, and Co 2+, Ni3+, Cu4+, and Zn5+, whose configuration is 3d 7, are interpreted ...