JEE Main 20265 AprilMorning Shift
- Exam
- JEE Main
- Year
- 2026
- Date
- 5 April
- Shift
- Morning Shift
- Subject
- Chemistry
- Chapter
- General Organic Chemistry
JEE Main 2026 · 5 April · Morning Shift · Chemistry · General Organic Chemistry
Given below are two statements: Statement I: On the basis of...
Given below are two statements:
Statement I: On the basis of inductive effect, the order of stability of alkyl carbanions is CH CH-CH (CH)CH (CH)C.
Statement II: Allyl and benzyl carbanions are more stabilised by inductive effect and not by resonance effect.
In the light of the above statements, choose the correct answer from the options given below
Statement I: On the basis of inductive effect, the order of stability of alkyl carbanions is CH CH-CH (CH)CH (CH)C.
Statement II: Allyl and benzyl carbanions are more stabilised by inductive effect and not by resonance effect.
In the light of the above statements, choose the correct answer from the options given below
Options
- ABoth Statement I and Statement II are correct
- BBoth Statement I and Statement II are incorrect
- CStatement I is correct but Statement II is incorrect
- DStatement I is incorrect but Statement II is correct
Correct answer
C. Statement I is correct but Statement II is incorrect
Step-by-step solution
Statement I is correct because alkyl groups exert a +I effect (electron-donating inductive effect). This increases the electron density on the negatively charged carbon atom, destabilizing the carbanion. Thus, as the number of alkyl groups increases, the stability of the carbanion decreases. The order of stability is .
Statement II is incorrect because allyl and benzyl carbanions are highly stabilized by the resonance effect, where the negative charge is delocalized over the adjacent bonds or the benzene ring, rather than by the inductive effect.
Answer: Statement I is correct but Statement II is incorrect
Statement II is incorrect because allyl and benzyl carbanions are highly stabilized by the resonance effect, where the negative charge is delocalized over the adjacent bonds or the benzene ring, rather than by the inductive effect.
Answer: Statement I is correct but Statement II is incorrect