Bro-4

In chemistry, the perbromate ion is the anion having the chemical formula BrO⁻ ₄. It is an oxyanion of bromine, the conjugate base of perbromic acid, in which bromine has the oxidation state +7. Unlike its chlorine and iodine analogs, it is difficult to synthesize. It has tetrahedral molecular geometry. The term perbromate also refers to a compound that contains the BrO⁻ ₄ anion or the –OBrO ₃ functional group. The perbromate ion is a strong oxidizing agent. The reduction potential for the BrO⁻ ₄/Br⁻ couple is +0.68 V at pH 14. This is comparable to selenite's reduction potential.