Question

What are the major drawbacks of the Valence bond theory?

Answer 1

Valence bond theory:

Knowledge about the following concepts is required for the discussion of valence bond theory:

• Atomic orbitals
• Electronic configuration of elements
• Overlap criteria of atomic orbitals
• Hybridization of atomic orbitals
• Principles of superposition and variation.

Limitations of Valence bond theory:

• Valence bond theory fails to explain the formation of coordinate covalent bonds.
• This theory fails to explain the magnetic properties of Oxygen molecules.
• Valence bond theory does not explain the bonding in electron-deficient molecules such as Diborane.