In aprotic solvent which of the following has highest nucleophilicity ?

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 A $F^{-}$
Nucleophilicity is referred to as the tendency to donate the electrons, and nucleophile is a substance which possesses electrons to donate.
A polar aprotic solvent does not have a hydrogen atom that can participate in hydrogen bonding.
Thus $F^{-}$ becomes a much better nucleophile.

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