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Addition of HX on alkene proceed through formation of carbocation . This reaction is follows Markovnikov's rule. According to markovnikov's rule addition of electrophile occurs on that carbon of alkene which have more number of -H atom Ph-CH = CH_2 underset(HX)to underset("(major)")(Ph-overset(x)overset(|)CH-CH_3) + underset("(minor)")(Ph-CH_2-CH_2-X) Which of the following alkenes will give markovnikov's reaction ?

Answer» <html><body><p>`F_3 C - CH =CH_2 <a href="https://interviewquestions.tuteehub.com/tag/overset-2905731" style="font-weight:bold;" target="_blank" title="Click to know more about OVERSET">OVERSET</a>(<a href="https://interviewquestions.tuteehub.com/tag/hcl-479502" style="font-weight:bold;" target="_blank" title="Click to know more about HCL">HCL</a>)to`<br/>`H_3N^(+)-CH = CH_2 overset(HCl)to `<br/>`O_2N - CH = CH_2 overset(HBr)to`<br/><img src="https://doubtnut-static.s.llnwi.net/static/physics_images/AKS_TRG_AO_CHE_XI_V01_D_C04_E03_195_O04.png" width="30%"/> </p>Solution :A) Because `F_3C- overset(<a href="https://interviewquestions.tuteehub.com/tag/oplus-2895718" style="font-weight:bold;" target="_blank" title="Click to know more about OPLUS">OPLUS</a>)(C)H-CH_3` is unstable due to powerful - I effect of `CF_3` <a href="https://interviewquestions.tuteehub.com/tag/group-1013370" style="font-weight:bold;" target="_blank" title="Click to know more about GROUP">GROUP</a> <br/>B) `H_3^(oplus)N - CH - CH_2 overset(HCl)to H_3overset(oplus)N -CH_2 - Cl`. <br/> Because `NH_3 -CH-CH_3` unstable due to powerful - I effect of `NH_3` group <br/> C) `NO_2 - CH - CH_2 NO_2 - CH_2 - Br ` <br/> Because `NO_2 - overset(oplus)CH_2 - CH_3` is unstabledue to -I effect to `NO_2` group <br/> D) <img src="https://doubtnut-static.s.llnwi.net/static/physics_images/AKS_TRG_AO_CHE_XI_V01_D_C04_E03_195_S01.png" width="80%"/> <br/> is more <a href="https://interviewquestions.tuteehub.com/tag/stable-1223548" style="font-weight:bold;" target="_blank" title="Click to know more about STABLE">STABLE</a> I effect `-CH_3` groups and .9. hypen conjugative structures</body></html>


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