The Chemistry Tutor: Vol.9: Atomic Number, Mass Number and Isotopes: Part 1 (2011)

Volume nine of the series that aims to provide a basic introduction to chemistry. This episode introduces the related topics of atomic number, mass number and isotopes. The structure of the atom and its role in organising the periodic table makes it of fundamental importance in chemistry. The method of atomic notation using both the chemical symbol and the atomic number is outlined. So too are the existence and nature of isotopes.