Describe the regioselectivity and stereospecificity in the hydrohalogenation of an alkene. entry field with incorrect answer

a. markovnikov orientation with both syn- and anti-addition
b. markovnikov orientation with syn-addition
c. anti-markovnikov orientation with syn-addition
d. anti-markovnikov orientation with anti-addition
e. markovnikov orientation with anti-addition

Markovnikov orientation with both syn- and anti-addition

Explanation:

Addition of hydrogen halides to alkenes (hydrohalogenation) show regioselectivity, they obey Markovnikov rule. This is always obeyed in all alkene reactions with hydrogen halides. The major product is always one in which the halide is attached to the carbon with the least number of hydrogen atoms and the hydrogen attached to the carbon with the greatest number of hydrogen atoms across the double bond. However, the reaction is not steroselective. It does not yield a greater percentage of a particular stereo isomer. The reaction yields a 50-50 mixture of both syn- and anti- addition products.

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