Question

Which state of matter has the strongest intermolecular force of attraction between its particles?

• A. Solid
• B. Liquid
• C. Gas
• D. Both liquid and gas

Answer 1

The correct option is A

Solid

The explanation for the correct option:

1. A) Solid: Solids have a definite volume, fixed shape, and free surfaces.
2. The molecules of a solid are closely packed together. This shows that the intermolecular force is the strongest in solids.
3. Since the intermolecular force is strong, the molecules in solids cannot move. Thus it has a fixed shape and volume.
4. Because of their fixed shape, solids cannot flow.

The explanation for the incorrect option:

B) Liquid:

1. The molecules of a liquid are not closely packed. This shows that the intermolecular force is slightly weaker.
2. Because of weak intermolecular force, liquids do not have a fixed shape.

C) Gas:

1. The molecules of a gas are loosely packed. This shows that the intermolecular force is the weakest.
2. Because of the weakest intermolecular force, gases do not have a fixed shape and volume.

Hence, the correct statement is A) Solid.