Question

The decreasing order of nucleophilicity among the nucleophiles :
(A)$CH_{3}\underset{\underset{O}{||}}{C}-O^-$
(B)$CH_3O^-$
(C) $CN^-$

• A. $(C), (B), (A), (D)$
• B. $(B), (C), (A), (D)$
• C. $(D), (C), (B), (A)$
• D. $(A), (B), (C), (D)$

Answer 1

Answer: (A)

If acid is weak, its conjugate base (nucleophile) is strong and vice versa.
Acidic nature of IV > I > III > II and nucleophilicity of B > C > A > D