Bonding theory {valence-bond theory} involves electric interactions between atoms. Molecular orbitals only form between valence electrons, because only valence electrons can contact outside world and valence electrons are least bound. Other electrons are too tightly bound. However, valence-bond theory weights ionic effects too lightly.
Physical Sciences>Chemistry>Inorganic>Chemical Bond>Theory
5-Chemistry-Inorganic-Chemical Bond-Theory
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Date Modified: 2022.0224