Among the following which is the strongest oxidising agent:

B r_{2}

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F_{2}

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I_{2}

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C l_{2}

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Solution

The correct option is B $F_{2}$
As we move down in $group- 17$ , electronegativity decreases. Fluorine is the most electronegative element. so forming $F^{-}$ is the most energetically favourable of the standard reductions. This makes fluorine the most powerful oxidising agent. The order of strong oxidizing agent of halogens will be:
$F_{2} > C l_{2} > B r_{2} > I_{2}$
Therefore, the correct answer is B.

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