$(i)$ Give the reaction for the bromination of ethane.
$(ii)$ Is this reaction suitable for obtaining pure bromoethane? Why?
$(iii)$ Give the name of the reaction mechanism and the names of the stages occurring in the reaction.
$(iv)$ Give the reaction for the first stage.
$(v)$ Which type of bond cleavage occurs in the first stage?

(N/A) $(i)$ $C_{2}H_{6} + Br_{2} \xrightarrow{hv} C_{2}H_{5}Br + HBr$
$(ii)$ This reaction is not suitable for the preparation of pure bromoethane because it produces a mixture of poly-bromoalkanes,and their separation is very difficult.
$(iii)$ The mechanism is a free radical substitution reaction. The stages are: $1.$ Initiation,$2.$ Propagation,and $3.$ Termination.
$(iv)$ $Br_{2} \xrightarrow{hv} 2Br^{\bullet}$
$(v)$ Homolytic bond cleavage (homolysis) of the $Br-Br$ bond.