Which type of intermediate $$\left( A \right)$$  is formed during the reaction?
$$C{H_3}C{H_2} - N = N - C{H_2}C{H_3}$$       \[\xrightarrow{\text{Heat}}\left( A \right)+{{N}_{2}}\]

Solution :
\[C{{H}_{3}}C{{H}_{2}}-N=N-C{{H}_{2}}C{{H}_{3}}\]       \[\xrightarrow{\text{Heat}}\underset{\begin{smallmatrix} \text{Free radical} \\ \left( A \right) \end{smallmatrix}}{\mathop{2C{{H}_{3}}\dot{C}{{H}_{2}}}}\,+{{N}_{2}}\]