JEE Main Chemistry question
How many of the following compounds will show (a meaningful) Markovnikov's addition: *cis*-but-2-ene, 2-methylpropene, propene, hex-3-ene, 3-methylbut-1-ene, ethane, *trans*-but-2-ene, pent-2-ene?
Answer: 4
Solution
Markovnikov's rule describes a regiochemical preference that is only meaningful for an unsymmetrical alkene. *cis*- and *trans*-but-2-ene and hex-3-ene are symmetric about their double bonds (identical substituents on each
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