Question:
Reduction potentials of some ions are given below. Arrange them in decreasing
order of oxidising power.
(i) ClO4–> IO4–> BrO4–
(ii) IO4–> BrO4–> ClO4–
(iii) BrO4–> IO4–> ClO4–
(iv) BrO4–> ClO4–> IO4–
Solution:
Option (iii) BrO4–> IO4–> ClO4– is the answer.