I finished my lecture material for Chapter 7 today by discussing magnetism, or more specifically when an atom is more or less diamagnetic/paramagnetic. If an atom is diamagnetic it does not have any unpaired electrons and if it is paramagnetic it contains unpaired electrons. If one atom has more unpaired electrons than another one, it is more paramagnetic in character.
We then discussed how certain periodic trends, such as ionization energy and radii are interrelated and you should know what effect ionization energy has on the radius of an atom or ion.
Chapter 8 starts with the overall depiction of ionic and covalent bonds. We discussed the main principles of Lewis Theory and how certain principles, such as the octet rule were established. We briefly mentioned how to draw Lewis dot structures and we will use these structures as the background on how to draw Lewis structures and come up with the VSEPR shapes.
You should have all the homework from Chapter 6 and 7 complete and should take the practice exam tonight to see where you are in terms of the rest of the class.
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