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(B) The boiling point of isomeric haloalkanes decreases with an increase in branching because branching reduces the surface area of the molecule,which

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$(c) < (b) < (a)$

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(B) The boiling point of isomeric haloalkanes decreases with an increase in branching because branching reduces the surface area of the molecule,which in turn decreases the magnitude of van der Waals forces of attraction.$(a)$ $CH_3CH_2CH_2CH_2Br$ is a straight-chain primary alkyl halide (n-butyl bromide).$(b)$ $(CH_3)_2CHCH_2Br$ is a branched primary alkyl halide (isobutyl bromide).$(c)$ $(CH_3)_3CBr$ is a tertiary alkyl halide (tert-butyl bromide),which is the most branched.Therefore,the order of boiling points is $(c) < (b) < (a)$.

Arrange the following compounds in the increasing order of their boiling points:
$(a)$ $CH_3CH_2CH_2CH_2Br$
$(b)$ $(CH_3)_2CHCH_2Br$
$(c)$ $(CH_3)_3CBr$

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Arrange the following compounds in the increasing order of their boiling points:$(a)$ $CH_3CH_2CH_2CH_2Br$$(b)$ $(CH_3)_2CHCH_2Br$$(c)$ $(CH_3)_3CBr$