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What is the correct order when the substances $O_{2}$ , $H_{2} O, {OF}_{2}$ and $H_{2} O_{2}$ are arranged in order of increasing oxidation number for oxygen?

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$H_{2} O, H_{2} O_{2}, O_{2}, {OF}_{2}$

$H_{2} O_{2}, O_{2}, H_{2} O, {OF}_{2}$

$O_{2}, H_{2} O, {OF}_{2}, H_{2} O_{2}$

${OF}_{2}, O_{2}, H_{2} O_{2}, H_{2} O$

answer is B.

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Detailed Solution

Oxidation number for oxygen in $O_{2}$ is zero.

Oxidation number for oxygen in $H_{2} O$ is -2.

Oxidation number for oxygen in ${OF}_{2}$ is 2.

Oxidation number for oxygen in $H_{2} O_{2}$ is -1.

So correct order of increasing oxidation number for oxygen,

$H_{2} O, H_{2} O_{2}, O_{2}, {OF}_{2}$ .

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