Question

what is vander wall forces?

Answer 1

Van der Waals forces, relatively weak electric forces that attract neutral molecules to one another in gases, in liquefied and solidified gases, and in almost all organic liquids and solids. The forces are named for the Dutch physicist Johannes Diderik van der Waals, who in 1873 first postulated these intermolecular forces in developing a theory to account for the properties of real gases. Solids that are held together by van der Waals forces characteristically have lower melting points and are softer than those held together by the stronger ionic, covalent, and metallic bonds.

Answer 2

◆van der wall forces are those small forces which are present every where means present in each and every compound.

Such as Hydrogen bonding

present in H20. and various compounds such as NF3,NO2 etc.