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Potassium permanganate, sodium permanganate, and barium permanganate are all potent oxidizers.Potassium permanganate, also called Condy's crystals, is a commonly used laboratory reagent because of its oxidizing properties; it is used as a topical medicine (for example, in the treatment of fish diseases).Manganese is a chemical element with symbol Mn and atomic number 25.

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The cave paintings in Gargas that are 30,000 to 24,000 years old contain manganese pigments.Ionized manganese is used industrially as pigments of various colors, which depend on the oxidation state of the ions.The permanganates of alkali and alkaline earth metals are powerful oxidizers.This oxidation state is also seen in the mineral rhodochrosite (manganese(II) carbonate).Manganese(II) most commonly exists with a high spin, S = 5/2 ground state because of the high pairing energy for manganese(II).

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