Foundations of Chemistry

, Volume 13, Issue 2, pp 121-129

Isodiagonality in the periodic table

  • Geoff Rayner-CanhamAffiliated withGrenfell Campus, Memorial University Email author 

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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