Foundations of Chemistry

, Volume 13, Issue 2, pp 121–129 | Cite as

Isodiagonality in the periodic table

  • Geoff Rayner-Canham


Diagonal relationships in the periodic table were recognized by both Mendeléev and Newlands. More appropriately called isodiagonal relationships, the same three examples of lithium with magnesium, beryllium with aluminum, and boron with silicon, are commonly cited. Here, these three pairs of elements are discussed in detail, together with evidence of isodiagonal linkages elsewhere in the periodic table. General criteria for defining isodiagonality are proposed.


Diagonal relationship Isodiagonality Periodic table Periodic patterns 



An anonymous referee is thanked for helpful comments which led to a significant improvement of the manuscript.


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© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.Grenfell Campus, Memorial UniversityCorner BrookCanada

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