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Что (кто) такое valence bond - определение
Valence bond theory
![σ bond between two atoms: localization of [[electron density]]](https://commons.wikimedia.org/wiki/Special:FilePath/Sigma bond.svg?width=200 "σ bond between two atoms: localization of [[electron density]]")
ONE OF TWO FOUNDATIONAL THEORIES OF QUANTUM CHEMISTRY
Valence Bond; Valence Bond Theory; Valence bond Theory; Valence Bond theory; Valance bond; Valency bonds; Valence bond; Valence-bond theory; Valence bond model; VBT
In chemistry, valence bond (VB) theory is one of the two basic theories, along with molecular orbital (MO) theory, that were developed to use the methods of quantum mechanics to explain chemical bonding. It focuses on how the atomic orbitals of the dissociated atoms combine to give individual chemical bonds when a molecule is formed.
Generalized valence bond
The generalized valence bond (GVB) method is one of the simplest and oldest valence bond method that uses flexible orbitals in the general way used by modern valence bond theory. The method was developed by the group of William A.
Bond valence method
The bond valence method or mean method (or bond valence sum) (not to be mistaken for the valence bond theory in quantum chemistry) is a popular method in coordination chemistry to estimate the oxidation states of atoms. It is derived from the bond valence model, which is a simple yet robust model for validating chemical structures with localized bonds or used to predict some of their properties.
