Multiple choice In which of the following molecules is Mn in the highest oxidation state? Mn2O3 MnF5 K2MnO4 KMnO4 MnO2 Reveal answer Fill a bubble to check yourself D Correct answer Explanation Correct answer. Among the given molecules, Mn has the highest oxidation state in KMnO4. Oxidation state of Mn in KMnO4 is +7.