The nucleophilicity order of halogens in polar protic solvent is :

F^{-} > C l^{-} > B r^{-} > I^{-}

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F^{-} > I^{-} > B r^{-} > C l^{-}

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F^{-} < C l^{-} < B r^{-} < I^{-}

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C l^{-} > F^{-} > B r^{-} > I^{-}

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Solution

The correct option is C $F^{-} < C l^{-} < B r^{-} < I^{-}$
The degree of hydration of anions increases with the decrease in the size of the anions and hence nuclephilicity decreases in polar protic solvent.
Correct order of anionic size is $F^{-} < C l^{-} < B r^{-} < I^{-}$ .
Correct order of degree of hydration is $F^{-} > C l^{-} > B r^{-} > I^{-}$
Correct order of nucleophilicity in polar protic solvent is $F^{-} < C l^{-} < B r^{-} < I^{-}$ .

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I^{-} < B r^{-} < C l^{-} < F^{-}

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I^{-} < B r^{-} < C l^{-} < F^{-}

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