Question

why the colour of kmno4 is deep purple​

Answer 1

Answer:

However, KMnO4 has a deep purple color because of charge transfer from the ligand (O2–) to the metal center. This is called a ligand-to-metal charge transfer. The colour 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.

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