CAUSE of Colour of KMnO4 Potassium permanganate

CAUSE of Colour of KMnO4  Potassium permanganate
Or Why KMnO4 Potassium Permanganate is Coloured?

Detailed Solution:

In Potassium permanganate, Manganese exhibits +7 Oxidation States. So all electrons are lost. Hence Presence of Unpaired electrons is NOT correct Reason

It is NOT coordinate Complex, so d-d transition is NOT correct reason.

Charge Can't be Transfered from Mn to Oxygen as Mn does not have any formal charge. So, charge transfer from M to L is NOT Correct

Charge Can be Transfered from Oxygen to Mn as Oxygen have formal charge on it. So, charge transfer from L to M is CORRECT

So, answer is (3) option

L to M charge transfer