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Use the Molecule Shape simulator (http://openstaxcollege.org/l/16MolecShape) to explore realmolecules. On the Real Molecules tab, select “model” mode and S2O. What is the model bond angle? Explain whether the “real” bond angle should be larger or smaller than the ideal model angle.
Chemistry 101
Chapter 7
Chemical Bonding and Molecular Geometry
Chemical Bonding
Molecular Geometry
University of Central Florida
Rice University
Drexel University
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Hi there. This question asks us to look at it. Says s 20 in the model. However, the simulator does not have an s 20 but it does have an s 02 So I'm going to solve this for s 02 realizing that even if there were an s 20 it's going to be the same result because sulfur and oxygen are both groups Six elements so s 02 and this fictitious as 20 would end up looking the same. Eso I'm proceeding with eso to the model for this shows the sulfur double bonded to an oxygen single bonded to an oxygen with a lone pair. So as we look at this in the model, look at the molecular or look at the electron geometry structure that we're getting. We're getting three things lone pair of electrons, a double bond and a single bond attached to that central Adam. Therefore, we have the tribunal player Nothing electron geometry. So if we think about taking a circle and dividing it into thirds Hey, that gives us a bond angle of 120 degrees between these two bonds here on this molecule However, we realize that in riel molecules, these lone pairs up here actually exert more repulsion than bonded electrons. So this lone pair up here is pushing these guys farther away from it, which results in pushing them closer together. That's going to reduce that bond angle so that bond angle is going to be less than 120 degrees in the rial molecule. And when we check on it, indeed, it ISS. It's recorded as 119 degrees in the simulation, right? So that's what you should have discovered by working with the simulation. Thank you so much for watching.
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