Which is the best nucleophile in polar solvent?

F^{-}

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{C l}^{-}

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B r^{-}

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I^{-}

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Solution

The correct option is D $I^{-}$
The small sized ion has greater charge density. Due to high charge density in polar solvent, they get easily hydrated. So $I^{⊝}$ has greater size. So, it will be best nucleophile in polar solvent.

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