VSEPR Theory: Common Mistakes
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- เผยแพร่เมื่อ 30 มิ.ย. 2024
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Don't make these common mistakes with VSEPR! We'll talking about how to determine the shape or geometry of a molecule using the VSEPR rules, for valence shell electron pair repulsion. Unshared electron pairs (also known as lone pairs) are very important for determining geometry, and we'll look at the following shapes: tetrahedral, trigonal planar, trigonal pyramidal, linear, and bent.
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My Chem lab teacher talked about this in class for 2 full hours using balloons. Everyone was so lost. He never even mentioned that the lone electron pairs is what pushes and creates the bent shape. He just kept repeating the words shape families and subclasses. I couldn't figure out how a triginalplaner could be a family AND a subclass. Just using the words "Based on because a molecule is not there" made it CAKE! I know it 100% now thanks!!!
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Please do a Valence Bond Theory and hybridization video.
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So first off, it's not exactly 107 degrees. It depends on the molecule. In some, it's a little bit more, and in others, it's a little bit less. So it's better to say that it's "around" 107 degrees. But where do we get that number? We don't just make it up--we take molecules and use sophisticated tools to measure the angle between the bonds. So 107º isn't a number you could come up with out of thin air. You actually need to take some real molecules, measure them, and see what the number is.
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"...; because understanding the mistakes is one of the best ways to learn and make sure that you really understand something." 0:30
thanks for the video tyler, I never made any of these mistakes although I am in 10th grade. but still tour videos helped me alot. Thanks.
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I just made this mistake and was happy to find someone helping me out !
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