Question

why is the diffusion of soild into another solid a very slow process

Answer 1

The diffusion of a solid in another solid is a very slow process because the particles in solids can not move from their positions.the particles can show a little vibrations about their fixed position.due to lack of sufficient movements in particles of solids,the diffusion of solids in solids is a slow process.

Answer 2

The diffusion of solid into another solid is a very slow process because in solid, particles of matter are very close to each other and it takes a bit long time whereas in liquids and gases particles of matter are very far from each other and the diffusion time is less.

Hope it helped you.❤
-Adiba Naeem