1) Why diffusion is faster in gases than in liquids?

2) Why solids do not diffuse?​

The type of substance - substances diffuse more quickly through gases than through liquids. This is because the particles in a gas are more spread out and move faster than the particles in a liquid. Temperature - the hotter the gas or liquid, the faster diffusion happens.

.. ⬇️

1) For gases there is more space. ... The distance between the constituent particles in gases becomes greater than in liquids, resulting in diffusion faster in gases than in liquids. Therefore, gas particles have higher kinetic energy and travel more rapidly.

2) For diffusion to work, the particles must be able to move around. This means that diffusion does not happen in solids – the particles in a solid can only vibrate and cannot move from place to place.

The answer is b i think