Compound in which all $C—N$ bond lengths are not same
$\begin{array}{*{20}{c}}
{HN = CH - C - CH = NH} \\
{||} \\
{\,\,\,C{H_2}}
\end{array}$
Resonating structures have different
Among the species : $C{O_2},C{H_3}CO{O^ - },$ $CO,C{O_3}^{2 - },$ $HCHO$ which has the weakest carbon- oxygen bond
Polarization of electrons in acrolein may be written as
In the cyanide ion, the formal negative charge is on
The correct order of $Cl - O$ bond order is