Fe3+ has d5 configuration and F⊝ is a weak ligand. The d–d electron transitions in high-spin 3d5 compounds are spin forbidden and therefore make the compound colorless.So, d-d transitions do not occur.

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The color of ${FeF}_{3}$ is

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Red brown

White

Light green

Brown

answer is D.

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Detailed Solution

Fe³⁺ has d⁵ configuration and $F^{⊝}$ is a weak ligand.
The d–d electron transitions in high-spin 3d⁵ compounds are spin forbidden and therefore make the compound colorless.
So, d-d transitions do not occur.

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