The following order can be correct for:F^{-} | vedclass

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(D) In a polar protic solvent like $H_2O$,the nucleophilicity is governed by the extent of solvation.Small ions like $F^{-}$ are highly solvated by hy

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Nucleophilicity in $DMSO$

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(D) In a polar protic solvent like $H_2O$,the nucleophilicity is governed by the extent of solvation.Small ions like $F^{-}$ are highly solvated by hydrogen bonding,which hinders their nucleophilic attack.As the size of the halide ion increases $(F^{-} Therefore,the nucleophilicity order in $H_2O$ is $I^{-} > Br^{-} > Cl^{-} > F^{-}$.However,the order $F^{-} > Cl^{-} > Br^{-} > I^{-}$ represents the order of decreasing basicity and increasing stability of the conjugate acid,which also corresponds to the order of decreasing nucleophilicity in polar aprotic solvents like $DMSO$ where solvation effects are minimal.

The following order can be correct for:
$F^{-} > Cl^{-} > Br^{-} > I^{-}$

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The following order can be correct for:$F^{-} > Cl^{-} > Br^{-} > I^{-}$