Valence bond theory

The valence bond theory is a concept in chemistry

Chemistry

Chemistry is the science [i] of matter [i] at the atom [i]ic to molecular [i] scale, dealing primarily ...

that explains the nature of a chemical bond

Chemical bond

A chemical bond is the physical phenomenon of chemical species [i] being held together by attraction of ...

in a molecule

Molecule

In chemistry, a molecule is an aggregate of two or more atom [i]s in a definite arrangement held togethe ...

. It has its origins with G.N. Lewis who in 1916 first proposed that a chemical bond forms by the interaction of two shared bonding electrons, with the representation of molecules as Lewis structure

Lewis structure

Lewis structures, also called electron-dot structures or electron-dot diagrams, are diagrams that show t...

s, and with the Heitler-London theory which for the first time enabled the calculation of properties of hydrogen based on quantum mechanical considerations Two other key concepts in VB theory are resonance

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