Persulfate

A persulfate (sometimes known as peroxysulfate or peroxodisulfate) is a compound containing the anions SO2−
5 or S
2O2−
8. The anion SO2−
5 contains one peroxide group per sulfur center, whereas in S
2O2−
8, the peroxide group bridges the sulfur atoms. In both cases, sulfur adopts the normal tetrahedral geometry typical for the S(VI) oxidation state. These salts are strong oxidizers.

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