Question

Which of the following will have highest nucleophilicity ?

• A. $\begin{array}{c}\theta \\ Cl\end{array}$
• B. $\begin{array}{c}\theta \\ F\end{array}$
• C. $\begin{array}{c}\theta \\ C{H}_3\end{array}$
• D. $\begin{array}{c}\theta \\ OH\end{array}$

Answer 1

Answer: (A)

$\begin{array}{c}\theta \\ Cl\end{array}$

The ability of a nucleophile to react at an electron-deficient centre is measured by nucleophilicity. It can be considered as a subset of basicity. Here, the order of nucleophilicity is- $C{l}^{⊝}>F^{⊝}>O{H}^{⊝}>C{H}_3^{⊝}$

Therefore, $C{l}^{⊝}$ has the highest nucleophilicity.