Answer: Molecular crystals refer to the crystals that are made up of molecules that are kept together by weak intermolecular interactions at the crystal’s grid points. Hydrogen bonds hold molecules together in some molecular crystals, such as ice. Individual atoms rather than molecules from the lattices point when one of the noble gases is cooled and solidified.
The intermolecular forces that hold the particles together are significantly weaker than ionic or covalent bonds in all circumstances.
Solid CO2 or dry ice is an example of molecular crystals with relatively weak intermolecular interaction.