What forces hold molecular solids together?

Dipole-dipole forces are for any substances which are not neutral to each other, including those in the solid state. As well, hydrogen bonds can hold together solids that have a partially-positive hydrogen and a partially-negative atom, like in solid water. read more

Molecular solids. A classic molecular solid consists of small, non-polar covalent molecules, and is held together by London dispersion forces (van der Waals forces); a classic example is paraffin wax. These forces are weak, resulting in pairwise interatomic binding energies on the order of 1/100 those of covalent, ionic, and metallic bonds. read more