Assertion : Oxygen atom in both, `O_2` and `O_3` has an oxidation number of -2.
Reason : Oxygen is assigned an oxidation number-2 in all of its compounds.

Options

A. If both (A) and (R) are correct and (R) is the correct explanation of (A).
B. If both (A) and (R) are correct, but (R) is not the correct explanation of (A).
C. If (A) is correct, but (R) is incorrect.
D. If both (A) and (R) are incorrect.

Answer

D

Explanation

In elements, in the free state each atom bears an oxidation number of zero. Oxidation number of oxygen in most.ofits compounds is-2 with two exceptions: in peroxides, oxidation number ofoxygen is-1 and in superoxides, oxidation number ofoxygen is