hiii can you please help me answer this question,

a.

Draw the radical hydrocarbon intermediate that is formed during the bromination of ethylbenzene, and draw the three most important resonance structures that help to explain why the radical intermediate is stabilized.

b. if a radical reacts with a non-radical, since one of the products of the reaction will be a radical, the radical chain reaction will continue. Starting with the intermediate drawn in question 5, suggest a reaction that would terminate the chain reaction.