NTA Abhyas JEE Main2020ChemistryGeneral Organic ChemistryPractice
The increasing order of basicity of the following compounds is (1) (2) (3) (4)
Options
- A(4) < (2) < (1) < (3)
- B(1) < (2) < (3) < (4)
- C(2) < (1) < (3) < (4)
- D(2) < (1) < (4) < (3)
Correct answer
D. (2) < (1) < (4) < (3)
Step-by-step solution
3 is most basic because its conjugate acid is stabilized by equivalent resonance. Out of 1 and 4, 4 is more basic due to +I effect. 2 is less basic than 1 and 4 because N atom is s p 2 hybridized (more s%).