1.

For the reaction CH_(2)=CH_(2)+HXtoCH_(3)CH_(2)X the orther of reactivity of HX is ,

Answer»

`HIgtHClgtHBr`
`HClgtHBrgtHI`
`HIgtHBrgtHCl`
`HBrgtHClgtHI`

Solution :Reactivity DEPENDS upon the BOND length. HCl bond is SHORTER and stronger, hence it is LESS reactive. HI bond islonger than HCl and HBR, hence HI is more reactiv than HCl and HBr.


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