Assertion: Oxygen atom in both `O_(2)` and `O_(3)` has oxidation number zero.
Reason: In `F_(2)O`, oxidation number of `O` is `+2`.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Answer

D

Explanation

In elements, in the free state each atom bears an oxidation number of zero.
Oxidation number of oxygen in most of its compounds is -2 with two exceptions : in peroxides, oxidation number of oxygen is `-(1)/(2)`.