Q. The oxidation number of $O$ in $O F_{2}$ is

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A

-2

B

+ 1

C

+ 2

D

-1

Solution:

Let the oxidation state of $O$ in $O F_{2}$ is $x$ .
$O F_{2}$
$x + (- 1) \times 2 = 0$
$x - 2 = 0$
$∴ x = + 2$