How to Make a Boron Atom Model. Teaching elementary chemistry can be quite difficult without visual aids. When describing the invisible world of the atomic-scale universe, it is helpful to have a representation of what an atom might look like if it were macroscopic and visible. The easiest way to make atomic models is to use Styrofoam balls and wooden pegs, using the balls to represent the subatomic particles that make up the atomic nucleus. Boron has an atomic number of 5 and therefore is composed of five protons. Most of the naturally-occurring Boron on Earth has six neutrons.