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Which of the following carbanion expecte...

Which of the following carbanion expected to be most stable?

A

`p-NO_(2)C_(^)H_(4)overset(-)(C)H_(2)`

B

`o-NO_(2)C_(6)H_(4)overset(-)(C)H_(2)`

C

`o-CHOC_(6)H_(4)CH_(2)`

D

`p-CHOC_(6)H_(4)CH_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
Carbanions are stabilised by electron withdrawing groups. `-NO_(2)` is stronger electron withdrawing group as compared to `-CHO`. At ortho-position, the effect is more pronounced.
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