Atom Builder is a program where you build atoms, hence the name.
Use the control board to add protons, neutrons and electrons
On the right side are all the information of the atom you just created
This program also follows the rules of the real world
For example you can't go past 118 protons
Please enjoy and please, please give feedback
This was created by @tarnx : Me, another programmer, and a chemist
Very nicely made. Though, for the charge in ion form, I've usually seen the sign go after the number (for example, He²⁻ instead of He⁻²). Also, there shouldn't be any 1's in the charge, so C⁺ instead of C⁺¹