Why metal to ligand charge transfer can be observed for d-orbitals and not f-orbitals?
Because Lanthanides do not form any complexes.
Because of the small size of lanthanides.
Because of variable oxidation states of f-orbitals.
Because of poor shielding effect of f- orbitals.
Because of poor shielding effect of f- orbitals they are deeply seated in an atom and weakly interact with ligands to undergo metal to ligand charge transfer.
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