what is intermolecular interaction? what is its roll in state of matter?
Please go through the following link to get answer of both queries.
https://www.meritnation.com/ask-answer/question/wats-intermolecular-forces-of-interaction/chemistry/460330
https://www.meritnation.com/ask-answer/question/wats-intermolecular-forces-of-interaction/chemistry/460330