A number of compounds used for this type of reaction are based on the compound IBX, which undergoes “hypervalent (10[1])twisting” at a cyclic iodine atom. Wastewater is treated via this type of reaction (10[1])in radical Fenton chemistry. (-5[1])DMP is a much stronger activator for this type of reaction compared to pyridinium chlorochromate or potassium permanganate. (10[2])Chemicals that (10[1])cause this type of reaction are represented by a hollowed-out circle below a flame in the international hazard pictograms. This type of reaction, which is represented by the first part of the mnemonic OILRIG, (10[1])is (10[1])the opposite of reactions (10[1])like hydrogenation that form saturated compounds. For 10 points, name this type of reaction that removes electrons from molecules, in contrast to reduction. ■END■ (10[1])