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For F e F 6 3 - and C o F 6 3 - , the correct statement is

Options

  1. Aboth are coloured
  2. Bboth are colourless
  3. CF e F 6 3 - is coloured and C o F 6 3 - is colourless
  4. DF e F 6 3 - is colourless and C o F 6 3 - is coloured

Correct answer

D. F e F 6 3 - is colourless and C o F 6 3 - is coloured

Step-by-step solution

In C o F 6 3 - it absorbs red colour light so it shows complementary colour green, while in the case of F e F 6 3 - there is very weak splitting so the light absorbed will be in infrared region so its complementary colour is not in visible region of light hence it appears colourless.

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