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Byju's Answer
Standard XII
Chemistry
Inductive Effect
Show how is c...
Question
Show how is carbanion :
¯
¯¯¯¯¯¯¯
¯
C
H
2
−
O
∥
C
−
C
H
3
Stabilised by resonance?
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Solution
Resonance structure of the anion is as follows,
Refer to image.
The delocalization of
π
electrons stabilizes the carbanion.
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Similar questions
Q.
Which of the following is not the pair of resonance structures?
I
.
H
N
=
C
=
O
↔
H
−
O
−
C
≡
N
I
I
.
¯
N
=
C
=
O
↔
N
≡
C
−
O
−
I
I
I
.
C
H
3
−
O
|
|
C
−
¯
C
H
2
↔
C
H
3
−
O
−
|
C
=
C
H
2
I
V
.
C
H
3
−
O
|
|
C
−
C
H
3
↔
C
H
3
−
O
H
|
C
=
C
H
2
Q.
Assertion :Resonance can occur when all the atoms involved lie in the same plane or nearly in the same plane. Reason:
C
H
3
−
C
|
|
O
−
C
H
3
and
C
H
3
−
C
|
O
H
=
C
H
2
are resonating structures.
Q.
Assertion :
C
H
3
−
C
H
3
|
C
|
C
H
3
−
C
H
2
−
B
r
+
N
a
O
H
→
C
H
3
−
C
H
3
|
C
|
C
H
3
−
C
H
2
−
O
H
(major). Reason: It follows with formation of more stable carbanion.
Q.
I
.
⊖
C
H
2
−
⊕
C
H
−
C
H
=
C
H
−
O
−
C
H
3
I
I
.
⊖
C
H
2
−
C
H
=
C
H
−
⊕
C
H
−
O
−
C
H
3
I
I
I
.
C
H
2
=
C
H
−
⊖
C
H
−
⊕
C
H
−
O
−
C
H
3
I
V
.
C
H
2
=
C
H
−
⊖
C
H
−
C
H
=
⊕
O
−
C
H
3
C
H
2
=
C
H
−
C
H
=
C
H
−
O
−
C
H
3
has the following above resonating structures.
The correct order of stability of these resonating structures is:
Q.
The two compounds
C
H
3
−
C
H
2
−
O
∥
C
−
C
H
2
−
C
H
2
−
C
H
3
and
C
H
3
−
O
∥
C
−
C
H
3
|
C
|
C
H
3
−
C
H
3
may be considered as:
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