b
(b) \(\begin{array}{*{20}{c}} {\,\,\,\,\,\,\,\,\,\,C{H_3}\,C{H_3}} \\ {|\,\,\,\,\,\,\,\,\,\,\,|} \\ {{H_3}C - C-C - C{H_3}} \\ {|\,\,\,\,\,\,\,\,\,\,\,\,|} \\ {H\,\,\,\,\,\,\,\,H} \end{array}\xrightarrow{{C{l_2}}}\,\,\,\,\begin{array}{*{20}{c}} {\,\,\,\,\,C{H_2}Cl\,\,\,C{H_3}} \\ {|\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\ {{H_3}C - C-C - C{H_3}} \\ {|\,\,\,\,\,\,\,\,\,\,\,\,|} \\ {H\,\,\,\,\,\,\,\,H} \end{array} + \begin{array}{*{20}{c}} {\,\,\,\,\,\,\,C{H_3}\,\,\,C{H_3}} \\ {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\ {{H_3}C - C-C - C{H_3}} \\ {|\,\,\,\,\,\,\,\,\,\,\,\,|} \\ {Cl\,\,\,\,\,\,H} \end{array}\)