Question

Explain valence bond theory. State it's limitations. ​

Answer 1

Answer:

Limitations of Valence Bond Theory :-

They are: It fails to explain the tetra valency of carbon. This theory does not discuss the electrons' energies. The assumptions are about the electrons being localized to specific locations.

Explanation:

Answer 2

Valence bond (VB) theory is a chemical bonding theory that explains the chemical bonding between two atoms. Like molecular orbital (MO) theory, it explains bonding using principles of quantum mechanics. According to valence bond theory, bonding is caused by the overlap of half-filled atomic orbitals. The two atoms share each other's unpaired electron to form a filled orbital to form a hybrid orbital and bond together. Sigma and pi bonds are part of valence bond theory.