Applet: Electron Configurations

Use this applet to explore in which order the atomic shells are filled with electrons. Wie start with hydrogen (Z=1). You can change the charge, and with it the number of electrons, by dragging the slider at the bottom. Alternatively, you can also use your "up" and "down"arrows on your keyboard.

© W. Bauer, 2006 / additions N. Sandor 2011