What are the major drawback of Valence bond theory?

The Valence Bond theory explains the formation, structures and magnetic behaviour of coordination compounds

Limitations of Valence bond theory

  • Valence bond theory failed to explain the tetra valency exhibited by carbon.
  • No insight offered on the energies of the electrons.
  • The theory assumes that electrons are localized in specific areas.
  • It does not give a quantitative interpretation of the thermodynamic or kinetic stabilities of coordination compounds.
  • Weak and strong ligands are not differentiated.
  • The colour exhibited by coordination compounds is not explained.

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