Pubblicato in Henry Rzepa's Blog
Autore Henry Rzepa
More than 100 years ago, before the quantum mechanical treatment of molecules had been formulated, G. N. Lewis proposed[cite]10.1021/ja02261a002[/cite] a simple model for chemical bonding that is still taught today. This is the idea of the three categories of bond we know as single, double and triple, comprising respectively two, four and six shared electrons each, at least for the very common carbon-carbon bond.