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Q.

The color of  FeF3  is

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a

Red brown

b

White

c

Light green 

d

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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