Question

Which of the following options is true regarding non-polar molecular solids?

• A. Atoms or molecules are held by weak dispersion forces or London forces
• B. They are soft, non-conductors of electricity
• C. All of the above
• D. They have low melting point and are usually in liquid or gaseous state at room temperature and pressure

Answer 1

The correct option is C All of the above

In molecular solids, molecules are the constituent particle. They are held together by weak intermolecular forces.
Molecular solids formed by non-polar covalent bonds like $C{l}_2,H_2,I_2$ are called non-polar molecular solids.
These solids show the following characteristics:
(a) Because of having only weak intermolecular forces among them, they have low melting points and are usually in liquid or gaseous states at room temperature and pressure.
(b) The molecules are held together by weak dispersion force or London force
(c) Being non-polar, they are non-conductors of electricity.

Hence, option (d) is correct.