(Polar molecules, Non-polar molecules, etc.)
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A= central atom. X= bound atom. E= Lone pair of electrons. AXE could potentially be on test 3 if we are talking about the VSEPR notation of an end atom. For example, OCN- will have a triple bond between C and N and then the N atom will have a lone pair, so the VSEPR notation of the N atom will be AXE I believe. Generally VSEPR is only asked about the central atom so we probably need not worry about this.
Recognizing the VSEPR formula is very helpful for naming the shapes of each molecule so I would recommend learning these. I'm sure this will pop up on the final so you should probably get used to giving the AXE(formula), bond angles, and shape for each molecule given.
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