BITSAT2011ChemistryGeneral Organic ChemistryActual
The correct nucleophilicity order is
Options
- ACH ₃⁻< NH ₂⁻< HO ⁻< F ⁻
- BCH ₃⁻ NH ₂⁻> HO ⁻ F ⁻
- CCH ₃⁻> NH ₂⁻> HO ⁻> F ⁻
- DNH ₂⁻> F ⁻> HO ⁻> CH ₃⁻
Correct answer
C. CH ₃⁻> NH ₂⁻> HO ⁻> F ⁻
Step-by-step solution
Nucleophilicity increases with the decrease in electronegativity of the central atom. Since electronegativity follows the order: F > O > N > C ; nucleophilicity of the concerned group will follow the reverse order i.e., CH ₃⁻> NH ₂⁻> OH ⁻> F ⁻