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(a)Give the decreasing order of reactivi...

(a)Give the decreasing order of reactivites of the following monmers towards catitopm addition polymerisation.
(I)`MeCH=CH_(2)`
(II)`PhCH=CH_(2)`
(III)`CH_(2)=CH-COOMe`
(IV)`CH_(2)=CH=Cl`
(b)Give the decreasing order of reactivities of the following monomers towards anionic addition polymerisation.
(I)`Me=CH=CH_(2)`
(II)`PhCH=CH_(2)`
(III)CH_(2)=CH=CN`
(IV)H_(2)C=CCl_(2)`
(v)H_(2)C=CF_(2)`
(VI)F_(2)C=CF_(2)`

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(a)Cationic polymerisation is favoured by the peresence of`EDG(e.g.,Megroup`.The more the`EDG`,the more stable is the intermediate carbocation,and as a result more favoured is the cationic polymerisation.
stability ofis
(II)
(I)
The decreasing reactivity order towards cation polymerisation is(II)gt(I)gt(IV)gt(III).
(b) Anion polymetic is favouable by the presence of `EWG(e.g.,rarr-X,-COOR,-CN,etc)`The more the`EWG,the more stable is the intermediate carbonion and consequently more favoured is the anionic polymersation.
Stability of
The decreasing reactivity order towards anion polymersation is(VI)gt(III)gt(V)gt(IV)gt(II)gt(I).
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`CH_(3)CH-CH-CH_(2)Cl`
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vii. `(CH_(3))_(3)C - CH=CH_(2)`

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