Question

With the increase in the number of Halogen atoms,
$C{H}_{3}ClC{H}_{2}C{l}_{2}CHC{l}_{3}CC{l}_4$
the boiling point

• A. Increases
• B. Decreases
• C. Becomes denser, settles at the bottom and doesn't boil
• D. No change at all

Answer 1

The correct option is A Increases

Intermolecular forces of attractions increases as​ molecular mass increases.​ So, large amount​ of heat require to break strong intermolecular forces​ and thus boiling point increases.
Here, the order of molecular mass is as follows : $C{H}_{3}Cl<C{H}_{2}C{l}_2<CHC{l}_3<CC{l}_4$ and thus boiling point also increases in same order.
$C{H}_{3}Cl<C{H}_{2}C{l}_2<CHC{l}_3<CC{l}_4.$