The arrangement of electrons at the main energy level. The arrangement of electrons at the main energy level of the elements of 1A-8A represents the energy level of which there are no electrons and energy. In the arrangement of electrons, it starts with the lowest energy level, so that the electrons in the orbital are the most stable. To develop a fun learning experience and enhance understanding. When making a markup The following information is displayed. - Each model can show the run of electrons that run around the nuclear. - Sound and mute button To describe the data. Text describing the number of protons, neutrons and electrons. - Model can be expanded to see details.