Write the free radical mechanism for the polymersation of ethene.

Explanation

Free radical mechanism of polymerisation of ethene.
(i) Chain initiating step :

(ii) Chain propagating step :
`C_(6)H_(5)-CH_(2)+CH_(2)+CH_(2)=CH_(2)rarrC_(6)H_(5)CH_(2)CH_(2)-CH_(2)-overset(@)(CH_(2))rarrrarrC_(6)H_(5)(CH_(2)-CH_(2))_(n)-CH_(2)-overset(@)(CH_(2))`
(iii) Chain terminating step :