A molecular solid is a crystalline solid held together by intermolecular forces and composed of discrete molecules held together by van der Waals interactions. This type of solid can be contrasted with metallic solids and covalent solids, which are held together by stronger bonds.As one would expect based on the aforementioned information, molecular solids tend to be melted or sublimated at lower temperatures than other types of solids, because of their weak intermolecular bonding.