Foundations of Chemistry

, Volume 16, Issue 3, pp 235–247

Adequacy of the new formulation of the Periodic Law when fundamental variations occur in blocks and periods


DOI: 10.1007/s10698-014-9204-x

Cite this article as:
Imyanitov, N.S. Found Chem (2014) 16: 235. doi:10.1007/s10698-014-9204-x


In the Periodic Tables the transition from atoms to double-charged cations is accompanied by alterations in the composition of s and p blocks and reciprocal location of blocks, as well as by changes in the composition and length of periods. We have previously described the relationship between the atom properties and the total number of differentiating electrons. This paper demonstrates that, despite the above transition-related alterations, this relationship is also valid for the description of the properties of double-charged cations. This can be exemplified by the dependence of the ionization energy on the total number of p electrons in p block, d electrons in d block, and f electrons in f block. Furthermore, a single periodic equation is sufficient for the description of properties of all of double-charged cations from each block.


Periodic system Blocks of elements Electronic configurations Differentiating electrons Cations 

Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  1. 1.Federal State Unitary Enterprise S.V. Lebedev Research Institute for Synthetic RubberSt. PetersburgRussia

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