question_answer

The increasing order of nucleophilicity of the following nucleophiles is :

[a]\[C{{H}_{3}}CO_{2}^{\Theta }\]

[b]\[{{H}_{2}}O\]

[c]\[C{{H}_{3}}SO_{3}^{\Theta }\]

[d]\[\overset{\Theta }{\mathop{O}}\,H\]

[JEE Main 10-4-2019 Afternoon]

A) [b] < [c] < [a] < [d]

B) [a] < [d] < [c] < [b]

C) [d] < (a] < [c] < [b]

D) [b] < [c] < [d] < [a]

Correct Answer: A

Solution :

          ione pair donating tendency on oxygen is reduced, nucleophilicity reduced b < c < a < d