Which one of the following compound will show addition of HBr to alkene according to markownikoff's rule?

Step-by-step solution

Markovnikov's rule is applicable for the addition of unsymmetrical reagents to unsymmetrical alkenes. But-2-ene ( CH₃-CH=CH-CH₃ ) is a symmetrical alkene. Hex-3-ene ( CH₃-CH₂-CH=CH-CH₂-CH₃ ) is a symmetrical alkene. Ethene ( CH₂=CH₂ ) is a symmetrical alkene. 2-methylpropene ( CH₃-C(CH₃)=CH₂ ) is an unsymmetrical alkene. Therefore, 2-methylpropene will undergo addition of HBr according to Markovnikov's rule.