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 ?

Addition of HX on alkene proceed through formation of carbocation . Th

1.	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» `F_3 C - CH =CH_2 OVERSET(HCL)to` `H_3N^(+)-CH = CH_2 overset(HCl)to ` `O_2N - CH = CH_2 overset(HBr)to` Solution :A) Because `F_3C- overset(OPLUS)(C)H-CH_3` is unstable due to powerful - I effect of `CF_3` GROUP B) `H_3^(oplus)N - CH - CH_2 overset(HCl)to H_3overset(oplus)N -CH_2 - Cl`. Because `NH_3 -CH-CH_3` unstable due to powerful - I effect of `NH_3` group C) `NO_2 - CH - CH_2 NO_2 - CH_2 - Br ` Because `NO_2 - overset(oplus)CH_2 - CH_3` is unstabledue to -I effect to `NO_2` group D) is more STABLE I effect `-CH_3` groups and .9. hypen conjugative structures