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University of South Carolina: Ionization Energy
First slide in a thorough presentation of ionization energy from a trend to an explanation of isoelectric series. Gives you practice problems as well.
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University of South Carolina: Periodic Trends
PowerPoint presentation that describes sizes of atoms in terms of isoelectric series as well as periodic trends. Includes information about sizes of ions and allows you to practice some problems on your own. Go to the index to choose...