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Byju's Answer
Standard IX
Chemistry
Lewis Dot Structure
which of the ...
Question
which of the following can show resonance? give reason 1.CH2=CH-CH=CH2 2. CH2=CH-CHO 3.CH2=CH-NH2 4. All of these
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Similar questions
Q.
Resonance structures of propenal are given below. Which of these resonating structure is more stable? Give reason for your answer.
C
H
2
=
C
H
−
C
H
=
O
I
⟷
⊕
C
H
2
−
C
H
=
C
H
−
⊝
O
I
I
Q.
Write IUPAC names of the following
@CH3-CH2-CH=CH2
@CH3-CH2-CH2-C(CH3)2-CH3
@CH3-CH2-CHO
@CH3-CH(OH)-CH3
@CH3-CH2-CH2-COOH
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.
Arrange the following in increasing order of stability on the basis of resonance.
(i)
C
H
2
=
C
H
−
C
H
=
C
H
−
+
C
H
2
(ii)
C
H
2
=
C
H
−
+
C
H
−
C
H
=
C
H
2
(iii)
C
H
2
=
C
H
−
+
C
H
−
−
C
H
−
+
C
H
2
(iv)
+
C
H
2
−
C
H
=
C
H
−
−
C
H
−
+
C
H
2
.
Q.
Which of the following lone-pair indicated is not involved in resonance?
(A)
C
H
2
=
C
H
−
.
.
N
H
−
C
H
3
(B)
C
H
2
=
C
H
−
.
.
O
.
.
−
C
H
3
(C)
C
H
2
=
C
H
−
.
.
O
.
.
−
C
H
=
C
H
2
(D)
C
H
2
=
C
H
−
N
H
2
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