NEET2017ChemistryGeneral Organic ChemistryActual
Arrange the following nucleophiles in the decreasing order of nucleophilicity:
Options
- AC , B , A , D
- BA , B , C , D
- CD , C , B , A
- DB , C , A , D
Correct answer
D. B , C , A , D
Step-by-step solution
Conjugate base (nucleophile) is strong if acid is weak and vice-versa. (B) CH ₃ O ⁻ is a conjugate base of CH ₃ OH (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 .