What is Valence Bond Theory?
Valance Bond Theory also called VBT is the basic theory used to explain the structure and the bonding in coordination compounds. This theory is used to explain the formation of the bonds in the various atomic orbitals of the coordination compounds.
Valance bond theory assumes that the bonds are formed by individual atoms by the donations of electrons. But this assumption is wrong as in reality the bonds in the coordination bond are formed by the delocalization of the electrons in the orbitals of the coordination compounds. Valance Bond Theory class 11 is the basic theory that helps us visualize how various bonds are formed in nature.
Valence Bond Theory
Valence bond theory (VBT) describes the formation of covalent bonds and the electronic structure of molecules. It assumes that electrons occupy atomic orbitals of individual atoms within a molecule, and that the electrons of one atom are attracted to the nucleus of another atom.
VBT states that the overlap of incompletely filled atomic orbitals leads to the formation of a chemical bond between two atoms. The unpaired electrons are shared and a hybrid orbital is formed. VBT views bonds as weakly coupled orbitals (small overlap). When the orbitals overlap along an axis containing the nuclei, they form a σ bond. VBT accounts for the directional nature of covalent bonds.
In this article, we will learn about Valance Bond Theory, Valance Bond Theory Class 12, its various postulates, limitations, and other details. Before learning about VBT (Valance Bond Theory), let’s first learn about Hybridization.
Table of Content
- What is Hybridization?
- Number of Orbitals and Types of Hybridization
- What is Valence Bond Theory?
- Postulates of Valence Bond Theory
- Applications
- Limitations