New basis for describing periodicity

Physical origin of chemical periodicities in the system of elements

“…13 and Refs. [62][63][64]186]). The reason is the energetic neardegeneracy of the ns and np orbitals ( Fig.…”

Using the similarity theory and dimensional analysis to quantify the periodic dependence of the properties of chemical elements

“…At the same time, the numerous studies of this kind and the wide variety of approaches used indicate that this problem has not yet been adequately resolved. [30][31][32][33][34] It has been repeatedly noted 6 that a serious obstacle that makes it difficult to establish the quantitative form of the periodic law is the diversity and heterogeneity of various physical and chemical properties of elements. Indeed, if the argument of the desired quantitative form of the periodic dependence, of course, should be the charge of the atomic nucleus (i.e.…”

“…At the same time, the numerous studies of this kind and the wide variety of approaches used indicate that this problem has not yet been adequately resolved. 30–34…”