Explain crystal field theory
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Yogita Ingle 5 years, 9 months ago
The crystal field theory was proposed by Hans Bethe and VanVleck. This theory gives satisfactory explanation for the bonding and the properties of complexes than the valence bond theory.
Assumptions of Crystal field theory:
The interaction between the metal ion and the ligand is purely electrostatic.
Negative ligands are treated as point charges and neutral ligands are treated as dipoles.
The five d-orbitals in an isolated gaseous metal atom (or) ion are degenerate.
The repulsions between the electrons in the metal ion and the ligands increases the energy of the d-orbitals and lifts the degeneracy in d-orbitals. This results in the d- orbitals getting split.
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