Question

Why do solids not diffuse​

Answer 1

Solids cannot diffuse each other because they are tightly packed and they are rigid and do not have fluidity.

Answer 2

This is because of diffusion , the movement of particles from an area of high concentration to an area of low concentration. ... This means that diffusion does not happen in solids – the particles in a solid can only vibrate and cannot move from place to place.