Organic Compounds Containing Halogens Question 201

Question: Which one of the following possess highest m.pt.

[Pb. CET 2004]

Options:

A) Chlorobenzene

B) o-dichlorobenzene

C) m-dichlorobenzene

D) p-dichlorobenzene

Show Answer

Answer:

Correct Answer: D

Solution:

p-dichlorobenzene molecule has symmetrical structure. It can fit well in its crystal lattice. The intermolecular forces of attraction are strong. Hence, it possesses highest melting point.