Move your mouse to the top of the screen to change the amount of protons, electrons, and neutrons. In the Bohr's model, 2 electrons can go in the first ring, 8 in the second, 18 in the third, 32 in the fourth, and 50 in the fifth. The default atom is ¹⁴Al, or aluminum 14, with 13 protons/electrons and 14 neutrons. Sorry for the somewhat disconnected nucleus; I know it looks weird at times.
