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Question

Free radical chlorination of hexane produces this number of monochloroderivatives (including stereoisomers)?

A
5
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B
7
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C
8
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D
3
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Solution

The correct option is B 5
For hexane, we have :

8 secondary hydrogens and
6 primary hydrogens

We will get 1-chloro hexane, 2-chloro hexane and 3-chloro hexane. 3 different hydrogens are replaced with a chlorine atom to get 3 different monochlorination products.

In 2-chloro hexane and 3-chloro hexane, they each form a racemic mixture. So a total of 5 isomers are formed after monochlorination of hexane.

Hence the correct option is A.

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