The colour of `KMnO_(4)` is due to

Options

A. `L rarr M` charge transfer transition
B. `sigma-sigma^(**)` transition
C. `M rarrL` charge transfer transition
D. d-d transition

Answer

A

Explanation

The deep purple colour of `KMnO_(4)` is not due to d-d transition but due to charge transfer from O to Mn, i.e., from Ligand (L) to Metal (M) which reduces the oxidation state of Mn from `+7` to `+6` momentarily.