Draw the resonating structures of the benzene diazonium salt.

Identify $\mathrm{A}$ and $\mathrm{B}$ in the following reaction:

Write the structures of $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ in the following:

${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{CONH}}_2\stackrel{{\mathrm{Br}}_2/\mathrm{KOH}}{\to } \mathrm{A}\stackrel{{\mathrm{NaNO}}_2+\mathrm{HCl}}{\to } \mathrm{B} \stackrel{\mathrm{KI}}{\to } \mathrm{C}$

Write the structures of $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ in the following:

${\mathrm{CH}}_3\mathrm{Cl}\stackrel{\mathrm{KCN}}{\to } \mathrm{A}\stackrel{{\mathrm{LiAlH}}_4}{\to } \mathrm{B}\stackrel{{\mathrm{CHCl}}_3+\mathrm{alc}. \mathrm{KOH}}{\to } \mathrm{C}$