Arrange the following nucleophiles in the decreasing order of nucleophilicity :

Question

Arrange the following nucleophiles in the decreasing order of nucleophilicity : (A) C, B, A, D (B) A, B, C, D (C) D, C, B, A (D) B, C, A, D

Tardigrade Admin · Accepted Answer

Conjugate base (nucleophile) is strong if acid is weak and vice-versa.
(B) CH₃O^- is a conjugate base of CH₃OH (II).
(C) CN^- is a conjugate base of HCN (III).
Order of acidic nature is IV > I > III > II.
Hence, the decreasing order of nucleophilicity is B > C > A > D.

Q. Arrange the following nucleophiles in the decreasing order of nucleophilicity :

C, B, A, D

A, B, C, D

D, C, B, A

B, C, A, D

Conjugate base (nucleophile) is strong if acid is weak and vice-versa. (B) CH3O- is a conjugate base of CH3OH (II). (C) CN- is a conjugate base of HCN (III). Order of acidic nature is IV > I > III > II. Hence, the decreasing order of nucleophilicity is B > C > A > D.

Conjugate base (nucleophile) is strong if acid is weak and vice-versa.
(B) CH₃O^- is a conjugate base of CH₃OH (II).
(C) CN^- is a conjugate base of HCN (III).
Order of acidic nature is IV > I > III > II.
Hence, the decreasing order of nucleophilicity is B > C > A > D.