Question

brimine and chlorine are in group 7 and they both form diatomic molecule. however bromine molecule exist as liquid at room temp and chlorine at room temp. give a brief explanation at what is responsible for their dispersity​

Answer 1

Answer: difference in Vander Waals forces

Explanation:

The intermolecular force of attraction between the molecules in chlorine is WEAKER than that of Bromine.

This force is known as VANDER WAALS forces. And it DECREASES down the group; so Chlorine which is placed higher is a GAS, while Bromine placed lower in Group 7 is a LIQUID.