PHYSICS 1L03 Chapter Notes - Chapter 6: Lewis Structure, Valence Electron, Chlorine
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Electrons can only orbit the nucleus in certain orbits because of the energy in each orbit. Each shell can hold only a maximum number of electrons as shown in the table below. The number of electrons in each shell can be found using the formula: Ionization - the process in which atoms gain or lose electrons and thus become ions with a positive or negative charge. Periods are the horizontal configuration of the periodic table. Another way of looking at what shells to fill is the following chart where the lines show the order of filling for the shells. Lets do a dot diagram for the element chlorine. So based on the diagram above we fill the 1s with 2 electrons. Then 2s with 2 electrons and 2p with 6 electrons. The next shell we fill is 3s with 2 electrons. We start filling 3p, but we can only put 5 electrons in that shell.