In KMnO4, the oxidation state of Manganese Mn is +7.Here's the breakdown of the oxidation states for each element in the compound:1. Potassium K has an oxidation state of +1.2. Manganese Mn has an unknown oxidation state, which we'll represent as x.3. Oxygen O has an oxidation state of -2, and there are four oxygen atoms, so the total oxidation state for oxygen is -8.Now, we can set up an equation to find the oxidation state of Manganese: +1 + x + -8 = 0Solving for x:x = 8 - 1x = 7So, the oxidation state of Manganese in KMnO4 is +7.