C H_2 = CH - CH = CH - ^ N H_3 ; _ (I) , , ,^ C H_2 -CH = CH - ^ … - Vidyadip

MCQ

$\mathop {C{H_2} = CH - CH = CH{ - ^ \oplus }N{H_3};}\limits_{(I)} \,\,\mathop {{\,^ \oplus }C{H_2}-CH = CH{ - ^\circleddash }CH{ - ^ \oplus }N{H_3}}\limits_{(II)} $

$\mathop {^ \oplus C{H_2} - CH = CH - CH = N{H_3}}\limits_{(III)} $

Which of these structures is not a valid canonical structure ?

$\mathrm{CH}_2=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}-{ }^{\oplus} \mathrm{NH}_3 ;{ }^{\oplus} \mathrm{CH}_2-\mathrm{CH}=$

A
$I$
B
$II$
✓
$III$
D
none of these

✓

Answer

Correct option: C.

$III$

c
$(c)$ Maximum co-valency of $N$ is $4.$

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