Which isomers of hexane give maximum number of stereoisomers on monochlorination?

n- hexane

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2-methylpentane

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3-methylpentane

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2,2-dimrthylbutane

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Solution

The correct option is B 2-methylpentane
In $x - h e x a n e$
$H_{3} C 1 - C 2 H_{2} - C 3 H_{2} - C H_{2} - C H_{2} - C H_{3}$
There are three different carbon thus give three isomers on monochlororination.
In 2-methyl pentane:
There are five different carbon, thus give $5$ stereo-isomers on monochlorination and will give maximum no. of stereo-isomers.

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