${MnO}_{4}^{-}$ is of intense pink colour, though Mn is in (7+) oxidation state, it is due to :

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Charge transfer when oxygen gives its electron to Mn (7+) changing in Mn (6+) temporaily

Charge transfer when Mn (7 +) gives its electron to oxygen and oxidise to Mn (8+) temporaily

Oxygen gives colour to it

none is correct explanation

answer is C.

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Detailed Solution

Since charge transfer occurs from ligand to metal, i.e. from oxygen to Mn, reducing it to +7 to +6, resulting in the intense pink color.

Hence option C is correct.

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