Chemistry - Halogen Derivative Question with Solution | TestHub

The nucleophilicity of${\mathrm{F}}^{-}$is higher in case of DMSO (Polar aprotic solvent) as there is no hydrogen bonding in such solvents.
Here${\mathrm{F}}^{-}$is a better nucleophile in polar protic solvents where its nucleophilicity decreases due to hydrogen bonding.
In polar aprotic solvents, the order of nucleophilicity is reversed:
${\mathrm{F}}^{-}>\mathrm{C}{\mathrm{l}}^{-}>\mathrm{B}{\mathrm{r}}^{-}>{\mathrm{I}}^{-}$