How are protons, neutrons, and electrons arranged to form an atom?

Protons are in the middle, electrons are on the loop (outside area) and the neutrons are mixed with the protons.

Explanation:

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

plasma - state of matter made up of electrically charged particles