Draw the Lewis structure for each of the following molecules or ions, and predict their electron-domain and molecular geometries: (e) XeF2

Video transcript

Well, everyone in this video, we're trying to identify the electron and molecular geometry of SECL four. So let's first determine the number of valence electrons. So we can go ahead and draw our lowest structure. So, first to calculate the number of films electrons, we have to be a little bit familiar with the periodic table. So, first, by looking at the compound, we have one atom of SE and four items of cl. Alright, so fans electrons. So for S E, it's going to be in group 68. So there's going to be six valence electrons per adam. As for cl we have four atoms of cl. Each item is going to have seven valence electrons because it's in group 78. So four times 7 is 28 electrons or valence electrons. Now I these two up. So these six and 28 We get a total of valence electrons. All right, drawing out our lower structure then this is a different color. All right, So have R S. A. As our central atom connected to four Adams of cl, C l, C L C L and C L. So, you see here, we have four bonds. So four times two is eight. We have used eight elections. If we put this into our calculator, the 34 -8 is going to be 26. So we have 26 electrons left. Now, let's see, let's fill in to have octet fulfilled. So now we have added six electrons per adam. We have four I'm So we added to. So that's going to be 24. So my 24 now. So we have two left. So we'll add this to our S. E. Alright. So, first we need to determine the electron geometry. All right. So the electron geometry, we don't take into account the lone pair as being a lone pair which is considered as another electron group. So then that means we have 1234 and five electron groups. In that case, then this electron geometry is going to be a trigger not by primer adult. So, tribunal. Bye for the middle. Sorry. So, that's going to be whatever answers for this question. All right. Next then is going to be our molecular geometry. And now this time we do take into consideration our long pair. So we have these four groups here from the flooring and we have one long hair. So that's going to be um ocular geometry of seesaw. And that's going to be the last answer for the last part of this question. Thank you all so much for watching