Generalization of the NpNn scheme and the structure of the valence space

The NpNn scheme, which has been extensively applied to even-even nuclei, is round to be a very good benchmark for odd-even, even-odd, and doubly-odd n uclei as well. There are no apparent shifts in the correlations for these f our classes of nuclei. The compact correlations highlight the deviant behav ior of the Z = 78 nuclei and are used to deduce effective valence proton nu mbers near Z = 64 as well as to study the evolution of the Z = 64 subshell gap.