Which of the following characteristics is/are possessed by non- polar molecular solids?

Options

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

Answer

D

Explanation

Monoatomic gasses such and He, Ar and diatomic molecules like `CI_(2),H_(2) and I_(1)` formed by none- polar covalent honds are non- polar molecular solid and shown the following characteratics
(i) Being covalent honded by weak forces , they have low melting point and are liquid or gases at mom temperature and presure
(ii) Atoms or molecules are held by weak dispersion force
(iii) Being non-polar they are non-conductor.