Question

Why are solids rigid?

Answer 1

$\bf{Solids}$ can be defined as any substance that has a definite shape, has mass and occupies volume.
The $\bf{ intermolecular}$ spaces between the molecules forming the solid structures are smaller. The intermolecular forces are strong. The constituent particles (atoms, molecules, nuclei, etc.) has a fixed position and they can oscillate only about their mean position. They are incompressible and rigid.

Answer 2

Answer :

Solids : The state of matter in which particles are very closely packed in a definite pattern and have strong forces of interactions.

→ Solids are rigid due to the strong force of attraction between particles.