Which of the following statements about diffusion are correct? 1. Aqueous ions are unable to diffuse in water. 2. Diffusion happens because particles move randomly. 3. During diffusion, particles spread out in every direction. 4. Diffusion can occur only in solids and liquids.
- A1 and 2
- B1 and 4
- C2 and 3
- D3 and 4