Question

What are the Applications of Valence Bond Theory?

Answer 1

Valence bond theory:

• In a molecule, electrons inhabit atomic orbitals instead of molecular orbitals.
• Because of the overlaying of atomic orbitals, a chemical bond is formed, and electrons are confined in the bond region.

Applications of Valence bond theory:

• Valence bond theory in chemistry explores the characteristics of a chemical bond in a molecule from the perspective of atomic valencies.
• The rule that the central atom in a molecule seeks to establish electron-pair bonds in line with geometric restrictions specified by the octet rule is summarised by valence bond theory.
• The criterion of the greatest intersection is an integral feature of the Valence Bond theory since it suggests the formation of the strongest possible bonds.
• This concept is applied to the production of covalent bonds in a broad range of substances.

Example of Applications of Valence bond theory:

• In the instance of the ${\mathrm{F}}_2$ particle, for example, the $\mathrm{F}-\mathrm{F}$ bond is produced by the crossroads of the ${\mathrm{p}}_{\mathrm{z}}$ orbitals of the two $\mathrm{F}$ atoms, each of which includes an unpaired electron.
• Following that, the colliding orbitals in ${\mathrm{H}}_2$ hydrogen and ${\mathrm{F}}_2$ fluorine molecules differ, as do the binding energies and bond lengths between ${\mathrm{H}}_2$ and ${\mathrm{F}}_2$ molecules.
• The covalent bond in a $\mathrm{HF}$ molecule is created by the intersection of the hydrogen $1\mathrm{s}$ orbital and the fluorine $2{\mathrm{p}}_{\mathrm{z}}$ orbital, both of which contain an unpaired electron.
• Because$\mathrm{H}$ and $\mathrm{F}$ share electrons, $\mathrm{HF}$ forms a covalent bond.