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NEET levelSingle correct optionDifficulty 1 of 3cc079

The colour of $[Ti (H X_{2} O) X_{6}] X^{3 +}$ is mainly due to

Aligand to metal charge transfer
Ba f-f transition
Ca d-d transition of the single $3 d$ electron from $t_{2 g}$ to $e_{g}$
Da $π \to π^{*}$ transition inside the water ligand

Answer: C

Ti X^{3 +}

is

3 d^{1}

. The electron in

t_{2 g}

absorbs visible light and is promoted to

e_{g}

, and the transmitted light gives the violet colour. Charge transfer and f-f transitions do not apply here.

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