Question

Which of the following solids is not a molecular solid?

• A. HCl
• B. H2}O
• C. CCl4
• D. SiO2

Hint:

Molecular solids are soft with low melting points; network covalent solids like SiO2} are hard and have high melting points.

Answer 1

The Correct Option is D

Molecular solids consist of molecules held by van der Waals forces or hydrogen bonds.
SiO2} is a covalent network solid with a 3D structure made of strong covalent bonds, not discrete molecules.