Arrange the following compounds in increasing order of their boiling points.
, (ii) `CH_(3)CH_(2)CH_(2)CH_(2)Br`
(iii) `H_(3)C-underset(Br)underset(|)overset(CH_(3))underset(|)C-CH_(3)`

Options

A. `ii lt ii lt iii`
B. `I lt ii lt iii`
C. `iii lt i lt ii`
D. `iii lt ii lt i`

Answer

C

Explanation

Boiling points of isomeric haloalkanes decrease with increase in branching as with increase in branching surface area decreases which leads to decrease in intermolecular forces.