Graph Theory in Chemistry

I found a page of a book written by a Romanian organic chemist. This page mentions how chemists use graphs like the ones we used in class to demonstrate covalently bonded compounds. After reading this page, I remember doing something very similar to this in my high school chemistry class. The edges of the graph represent covalent two-electron bonds and the verticesĀ of the graph represent atomic cores (valence electrons are not included in these graphs).

https://pubs.acs.org/doi/pdf/10.1021/ci00047a033

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