Arrange the following oxides in decreasing order of oxidation state of the metal ion.
$ (A)\text{Cu}_2\text{O} $
$ (B)\text{CrO}_3 $
$ (C)\text{Mn}_2\text{O}_7 $
$ (D)\text{V}_2\text{O}_5 $
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → (C), (B), (D), (A)
Decreasing order (highest to lowest oxidation state):
$\text{Mn}_2\text{O}_7(+7) >\text{CrO}_3(+6) >\text{V}_2\text{O}_5(+5) >\text{Cu}_2\text{O}(+1)$
