Question

The arrangement of following compounds :
(i) bromomethane
(ii) bromoform
(iii) chloromethane
(iv) dibromomethane
In the increasing order of their boiling point is

• A. $iii < i < iv < ii$
• B. $iv < iii < i < ii$
• C. $ii < iii < i < iv$
• D. $i < ii < iii < iv$

Answer 1

Answer: (A)

Boiling point increases with molecular mass

$\underset{\text{Bromoform (II)}}{{CHBr_3}}>\, \underset{\text{DLbromomethane (VI)}}{{CH_2Br_2}} >\, \underset{\text{Bromomethane (I)}}{{CH_3Br}}>\, \underset{\text{Chloromethane (III)}}{{CH_3Cl}}$