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Question

The coloration of [Fe(acac)3] and [Fe(phen)3]3+ respectively are due to

A
ligand to metal charge transfer, metal to ligand charge transfer
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B
metal to ligand charge transfer, metal to ligand charge transfer
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C
metal to ligand charge transfer, d-d transition
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D
d-d transition, intravalence charge transfer
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Solution

The correct option is B metal to ligand charge transfer, metal to ligand charge transfer
Colour of [Fe(acac)3] and [Fe(phen)3]3+ is due to metal to ligand charge transfer.
Metal to ligand Charge Transfer (MLCT): Charge transfer occur from the ligand filled orbitals of metal to the empty orbital of ligands.

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