I covered some details from Exp #7 and emphasized that in this experiment we are determining which ions are present in a qualitative sense. This means that as a chemist, we do not care how much of a particular substance is present. We just care if it is present or absent. So in measuring out quantities in this lab you do not have to be extremely careful.
I ALMOST finished Chapter 7 today as I discussed ionization energy, electron affinity, and electronegativity. When you are analyzing the ionization energy and electron affinity be sure to WRITE OUT THE ORBITAL BLOCK DIAGRAMS!!! Proper interpretation of these diagrams is the key to properly analyze the trends in ionization energy and electron affinity. Keep in mind that a completely filled orbital is very stable, especially a filled d orbital or the filled s and p combination to form a stable octet. Also, a half filled orbital is fairly stable and accounts for the non-linear trends we observe.
On Friday we will complete Chapter 7 in the first five minutes of class and then go on to chapter 8.
If you are keeping up with the material you should have all the additional homework problems from chapter 6 and chapter 7 complete.
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