Diffusion is the movement of solutes from an area of

high concentrations of molecular is to a lower concentration of monoculars

Diffusion is the movement of solutes from an area of higher concentration to an area of low concentration.

Explanation:

In chemistry, diffusion is the movement of molecules or atoms from an area of higher concentration to an area of low concentration. How it works is that molecules in motion from thermal energy randomly move about. Over time, this leads to the distribution of different particles in your volume solution.

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).