Question

Which one of the following statements is notapplicable to molecularsolids?

a. The units that occupy the lattice points are molecules.
b. The binding forces in molecular solids are dispersion forces or dispersion forces and dipole-dipole interactions.
c. Molecular solids have relatively low melting points.
d. Molecular solids are usually excellent conductors of electric current. e. Molecular solids are soft compared to covalent solids.

Answer 1

Answer: The answer is D. Molecular solids are usually excellent conductors of electric current

Explanation: Molecular solids are solids that have separate individual molecules held together by intermolecular forces (Van der Waal's force) rather than bonds.

Van der Waal's forces are the weak forces that contribute to intermolecular bonding between molecules.

Examples of a molecular solid are water ice, solid carbon dioxide and white phosphorus.

Molecular solids cannot conduct electricity because they have localized electrons (election localized within the bonds in each molecule).