MnO4– is of intense pink colour, though Mn is in +VII oxidation state. This is due :

Engineering

Chemistry

Colour and Magnetism

Question

MnO₄^– is of intense pink colour, though Mn is in +VII oxidation state. This is due :

charge transfer when Mn gives electron to oxygen

absorption of IR frequencies

charge transfer when oxygen gives its electrons to Mn making it +VI

d-d transition

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