Question

Which of the following is strongest nucleophile?

Options

• Br^–

• : OH^–

• CN^–

• \[\ce{C2H5\overset{-}{O}}\] :

Answer 1

CN^– 

Explanation:

The strength of nucleophile depends upon the nature of alkyl group R on which nucleophile has to attack and also on the nature of solvent. The order of strength of nucleophiles follows the order:

CN^– > I^– > C₆H₅O^– > OH^– > Br^– > Cl^–