What type of interactions hold the molecule together in a polar molecular solid?

What type of interactions hold the molecule together in a polar molecular solid?
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Within the molecule it is the covalent bonds which hold theatoms together. The facts that the molecule is polar or that thesubstance is in the solid state are irrelevant. If you were tryingto ask what holds the molecules together to make the solid, then itis dipole-dipole forces and van der Waals forces.
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