Classify the following solids in different categories based on the nature of intermolecular forces operating in them: Potassium sulphate, tin, benzene, urea, ammonia, water, zinc sulphide, graphite, rubidium, argon, silicon carbide.

Q 1.6: Classify the following solids in different categories based on the nature of intermolecular forces operating in them: Potassium sulphate, tin, benzene, urea, ammonia, water, zinc sulphide, graphite, rubidium, argon, silicon carbide. Solution:

Substance	type of solid
Potassium sulphate	Ionic solid
Benzene	Molecular solid (non−polar)
Urea	Polar molecular solid
Ammonia	Polar molecular solid
Water	Hydrogen bonded molecular solid
Zinc sulphide	Ionic solid
Graphite	Covalent or network solid
Rubidium	Metallic solid
Argon	Non−polar molecular solid
Silicon carbide	Covalent or network solid