Surrounding the nucleus of an atom are various energy "shells" composed of electron distribution probabilities known as atomic orbitals. These orbitals represent the density distribution of electrons that float around the atom, and are filled with new electrons as the atom increases in size.

This tutorial examines the first four energy levels of an atom, s, p, d, and f, chosen through the pull-down menu. By selecting a set of orbitals, you can select any combination of orbitals, using the radio buttons, to view all orientation configurations of these electrons based on the number of electrons located in each energy level.