The color of KMnO4 is due to

• df-Block

The color of KMnO₄ is due to

1. d – d transition
2. L → M charge transfer transition
3. σ – σ* transition
4. M → L charge transfer transition

Solution

The color in KMnO₄ arises from an electronic transition.

In the permanganate ion (MnO₄^-), manganese is in the +7 oxidation state, so it has no d electrons. Photons promote an electron from the highest energy molecular orbital to an empty d orbital on the manganese. When a photon of light is absorbed, this charge transfer takes place from L to M.

The correct option is B.