Question:
Which of the following arrangements represent increasing oxidation number of the central atom?
(i) CrO2- , CIO-3, CrO2-4 , MnO-4
(ii) CIO-3, CrO2-4 , MnO-4 , CrO-2
(iii) CrO2+4 , MnO-4 , CrO-2 , CIO3-
(iv) CrO24-, MnO4- , CrO2- , CIO3-
Solution:
Option (i) CrO2- , CIO-3, CrO2-4 , MnO-4
is the answer.