Question

Which of the following option(s) is/are true regarding non-polar molecular solids?

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

Answer 1

Answer: (A), (B), (C), (D)

They are soft and non-conductors of electricity

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