MnO2 is the most important oxide of manganese. MnO2 occurs naturally as the black coloured mineral p — d and f Block Elements Chemistry Question

Question

MnO2 is the most important oxide of manganese. MnO2 occurs naturally as the black coloured mineral pyrolusite. It is an oxidising agent, and decomposes to Mn3O4 on heating to 530°C. It is used in the preparation of potassium permanaganate and in the production of Cl2 gas. Over half a million tonnes per year of MnO2 is used in dry batteries. [3, 4]