What type of mixture is this illustration?

Suspension

Explanation:

It's a suspension because it is not mixed at all, and has distinctly separate layers.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

what is the question here. i think you messed up.