Potassium manganate VII has the chemical formula KMnO. To determine the oxidation state of the transition metal Mn in this compound, we need to consider the oxidation states of the other elements and the overall charge of the compound.Potassium K is an alkali metal and has an oxidation state of +1. Oxygen O typically has an oxidation state of -2. Since there is only one potassium atom and four oxygen atoms in the compound, the total oxidation state contributed by these elements is: +1 + 4 -2 = +1 - 8 = -7The compound KMnO is neutral, meaning its overall charge is 0. Therefore, the oxidation state of manganese Mn must balance the -7 contributed by the potassium and oxygen atoms:Mn + -7 = 0Solving for the oxidation state of Mn:Mn = +7So, the oxidation state of the transition metal manganese Mn in potassium manganate VII is +7.