Consider the following perhalate ions in acidic mediumClO4−(I),BrO4−(II),IO4−(III)Arrange these in the decreasing order of oxidizing power

Standard reduction potential (in volts) of the perhalate ions are given as below. ClO4−+2H++2e−→ClO3−+H2OEo=+1.19 VBrO4−+2H++2e−→BrO3−+H2OEo=+1.74 VIO4−+2H++2e−→IO3−+H2OEo=+1.65 VMore the standard reduction potential more is tendency of perhalate ion to undergo reduction and more stronger it will be as an oxidising agent.