Cg. Bao, Qualitative feature of the low-lying intrashell states of 4-valence-electron atoms derived from symmetry consideration, PHYS LETT A, 250(1-3), 1998, pp. 123-130
Inherent nodal surfaces existing in the wavefunctions of intrashell states
of 4-valence-electron atoms have been investigated. The decisive effect of
these surfaces has been demonstrated, the ordering of low-lying levels has
been predicted, and a primary classification scheme has been proposed. (C)
1998 Elsevier Science B.V.