This is the atom Beryllium, it’s atomic number is four which means it has four protons and four neutrons. It has five electrons because it’s atomic mass is 9.00. You might be wondering why it has five electrons when it’s atomic mass is 9.00. This is because there is a simple math problem to solve. To get the exact number of electrons, subtract the atomic number minus the atomic mass. Every atom is comprised of electrons, neutrons, and protons. Electrons has -1 electric pulse while protons have +1 electric pulse; therefore, they cancel each other out. You’d probably guess neutrons are neutral.  The protons and neutrons are bound together by gravity. The electrons are found in the electron cloud which orbits around the protons and neutrons. The electrons swirl around the neutrons and protons, while the neutrons and protons orbit around each other, and they never stop. Beryllium is actually used to make other metals stronger in general sense. I think that is pretty cool.