what are Van der waals forces?
Kindly refer the following link:
https://www.meritnation.com/ask-answer/question/what-are-vander-waal-s-forces/states-of-matter/3225430
https://www.meritnation.com/ask-answer/question/what-are-vander-waal-s-forces/states-of-matter/3225430