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$II$
- ✓$III$
- Dnone of these
