Consider the molecule PF4Cl. (c) Predict the molecular geometry of PF4Cl. How did your answer for part (b) influence your answer here in part (c)?

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Hello everyone in this video. We're going to determine the molecular geometry of S four S F four cl two. So let's first start off by calculating the number of valence electrons. So we can go ahead and draw our lowest structure. So first let's see. We need to determine the fail and electrons so you can see from this molecule we have four atoms of flooring and two atoms of chlorine and just one of the suffer. So, Of course RS has six fans electrons because it's in group 68. As for our f We have four atoms And each atom will have seven valence electrons Because it has there it is in group 78. That's going to be 28 Beyonce electrons. And then for our cl There's two atoms of it and each item will have seven valence electrons and same thing. It's in group 78. So two times 7 is 14. That's 14 fans electrons adding these six, The 28 and the 14 We will get a total of valence electrons. And then we have electron pairs that we're talking about 48, divided by two is 24 electron pairs. Alright, let's go ahead and draw our lowest structure now. So are central Adam is going to be our s of course there's going to be six other items is connected to. We have four Florence and two Lawrence. So we'll go ahead and draw bonds out first. All right. So I have or eFS and two seals. Let's see here. So we have 48 electrons. So that's were being used. 123456789, 10, 11, 12. We have 12 electrons that we have used. So 48 -12 is 36. And let's see here. We have 123, 456. So, let's see here. Every fill up one of it with this octet. We have used six electrons. So each will have three lone pairs. Then let's go ahead and fill those long pairs in. Alright, so, when we're determining any type of electron geometry, we have to go ahead and look at our central item. So, but that highlight I would have to see how many electron groups there are. In our case. Let's see. We have one, two, three. All right, five and 6 and six electron groups. When we have six electron groups, six electron groups. And we're talking about molecular geometry. Its shape is going to be Octa hydro molecular geometry. And that is also going to be our final answer for this problem. Thank you all so much for watching

Consider the molecule PF4Cl. (c) Predict the molecular geometry of PF4Cl. How did your answer for part (b) influence your answer here in part (c)?

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Key Concepts

VSEPR Theory

Molecular Geometry

Influence of Hybridization