JEE Advanced Chemistry question

is of intense pink colour, though Mn is in (+7) oxidation state. It is due to

(A)Oxygen gives colour to it
(B)Charge transfer when Mn gives its electron to oxygen
(C)Charge transfer when oxygen gives its electron to Mn making it Mn(+VI), hence colouredCorrect
(D)None of the above is correct

Answer: (C)

Solution

in has a configuration, so no d-d transition is possible, yet the ion is intensely coloured. This colour arises from ligand-to-metal charge transfer (LMCT): an electron is transferred from a filled oxygen

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Question ID VK-159689