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because no free radicals are involved in the reaction process
only carbo cations and Cl- are evolved which are ionic !!!
Metal ions catalyse the reaction
Metathesis, condensation, hydrolysis, free radical polymerization ... how many do you want?
BrO3- is the anion bromate, not a free radical.
in first step prepare ethane to chloro ethane fallowed by wurtz reaction.
chloro ethane can be prepared free radical reaction btw ethane and chlorine