Question

Which of the following exhibit the weakest intermolecular forces?

• A. He
• B. HCl
• C. $N{H}_3$
• D. $H_{2}O$

Answer 1

The correct option is A

He

Generally, eighteenth group elements are linked by the Van der Waal's force as their octet configuration is already complete and they are already stable. Hence these show weakest intermolecular forces. Example of 18th group elements is - He, Ne, Ar etc.