Cubical atom
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The cubical atom was an early atomic model developed by Gilbert N. Lewis in 1916 to account for the phenomenon of valency. It was further developed in 1919 by Irving Langmuir as the cubical octet atom.
It was eventually superseded by the Bohr atom.
References
Lewis's paper (http://chimie.scola.ac-paris.fr/sitedechimie/hist_chi/text_origin/lewis/Lewis-1916.htm)