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Preparation of Alkyl Halides

Which of the ...

Question

Which of the following cycloalkane gives open chain compound when it reacts with bromine?

A

Cyclopropane

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B

Cyclopentane

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C

Cyclohexane

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D

Cyclo-octane

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Solution

The correct option is A Cyclopropane
Cyclo propane with $B r_{2}$ .
The ring is broken because cyclopropane suffers badly from ring strain. The bond angle in the ring are $60^{\circ}$ rather than the normal value of about ${109.5}^{\circ}$ when the carbon makes four single bonds.

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