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Question
State the superiority of crystal field theory over valence bond theory.
Solution
Superiority of Crystal Field Theory over Valence Bond Theory:
a) Magnetic properties of complexes and variation with temperature are explained by
crystal field theory. Valence bond theory cannot explain these.
b) Crystal field theory gives the quantitative measure of the stability of complexes. It
predicts the geometry of complexes. It is not possible by valence bond theory
c) Kinetic and thermodynamic properties of some complexes are explained by crystal
field theory but not by valence bond theory.
d) Crystal field theory explains d-d transitions and colour of complexes. This is not
explained by valence bond theory.
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