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Byju's Answer
Standard XII
Chemistry
Introduction to Electrophilic Substitution
9. A: allyl c...
Question
9. A: allyl carbanion is more stable than nitromethyl carbanion. R: in nitro methyl carbanion only -I of NO2 is present while in allyl carbanion resonance is present
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Q.
The false statements among the following are:
I. A primary carbocation is less stable than a tertiary carbocation.
II. A cyclopropyl methyl carbocation is less stable than allyl carbocation.
III. A tertiary free radical is more stable than a primary free radical.
IV. Isopropyl carbanion is more stable than ethyl carbanion.
Q.
Assertion :The order of stability of carbanion are
(
C
6
H
5
)
3
C
−
>
C
6
H
5
C
H
−
2
>
a
l
l
y
l
>
C
H
−
3
>
(
C
H
3
)
2
C
H
−
Reason: The stabiliby of carbanions is influenced by both resonance and inductive effects.
Q.
Methyl carbanion is:
Q.
Most stable carbanion is