question_answer

Give the decreasing order of reactivities of the following monomers towards icationic addition polymerisation,        

(I) \[MeCH=C{{H}_{2}}\]

(II) \[PhCH=C{{H}_{2}}\]

(III) \[C{{H}_{2}}=CH-COOMe\]

(IV) \[C{{H}_{2}}=CH-Cl\]

A) \[I>II>III>IV\]              

B) \[II>I>IV>III\]

C) \[III>IV>I>II\]  

D)        \[II>IV>III>I\]