Quastion 241ptsDetermine the electron geometry (eg) and molecular geometry (mg) of HzCO:Iincar; mg = benttrigonal planar; mg benttrigonal planar, mg trigonal planar...

Determine the electron and molecular geometries of each molecule. (Hint: Determine the geometry around each of the two central atoms.) (a) $\mathrm{C}_{2} \mathrm{H}_{2}$ (skeletal structure HCCH) (b) $\mathrm{C}_{2} \mathrm{H}_{4}$ (skeletal structure $\mathrm{H}_{2} \mathrm{CCH}_{2}$ ) (c) $C_{2} H_{6}$ (skeletal structure $\mathrm{H}_{3} \mathrm{CCH}_{3}$ )

Okay, so the 1st 1 that we have is a linear wanted you, which would be something like this. And since it's linear, the angle would be one ET here. Next one is a try. Gunnell. Planners on drive on a blander would look something like this. You can change the color. Okay, so it would be e be on bleed. And every single angle between two atoms would be 1 20 degrees. That's what it's called diagonal planner. Next one is going to be tetrahedron. So for that, you head Drew, we would have full atoms attached toe essential. Adam. Something like this on this would actually be in front on this would be at the end, like behind it. Behind the clean on the Andrew cure will be 109 0.5 degrees. So this is a tetrahedron. The next one is try Gunnell. Bible A middle. Okay, so in this case, I would have five Adams near essential Adam, So I would help. Oh, at the movie here and here. This would be ag nine did agree this angle would be 90 Andi and the one at 90 degree. And then I have one which is behind the plane on one which is in front offered. And this would again be 1 20 These two would be 1 20 this would be at 90 degrees to the plane. Okay. And the next one that we have is octahedron. So just like the name suggests it is, it is going to be like it. This this is one he did you need aid on, then? This is in front, off the plane, like it's coming out on. This would be behind the plane and this is again outside. And this is behind on the angle between one is 90. So this would be at 90 dignities on. If you look at this angle, this angle would also be 90 de gea's. So you

The lenient, the linear, dry economic molecule. We will have a linear shape in which the angry between the two ones will be 180 degrees to be 180 degrees. Then they dry Gonna I mean, if geometry it tries or not. Lena Geometry. Well, look, something like the If, if that the F atoms are on the corner off triangle which in this case, because on our f, the angle will exactly be 60. So therefore, the angle between these two f will be 120 degrees. This would be 120. The tetrahedron, Demetri, that, uh, federal Jim a tree Tetra hydro geometry will look something like, Say, this is one born. This is other gone, which is probably coming about the man it is coming off the plane. Then there is a bond. It is in the plan along again, which is the plan so we can write. The air comes also So just to show that there coming off the plane, this sister detrimental geometry the angle between all the bonds will be 109 quite by the next. Is the dragon only byproduct drag on a fragile means coming from a triangle by means to and Deromedi and be Ramadan. The world pyramid really comes from pyramid. So this molecule say, Let us We're drying this for PC and fire. This molecule will apply what was in the center? There will be a triangle. There would be a strangle him. The blue jeans on the cardinals off the train. Okay, then there would be two Marines which are perpendicular to this drains and two Marines which are perpendicular to this Drang. So this is the drank and we are talking about. And this would be the fragment by gravity. Now the OC title shape. How will draw the time to ship? Oh, uh, his drunk shoot a title shift is we're drying it for Hobart. And that three six molecules in this bar is the wrong Dubai. And match three from all sides and next three and H three and H three and and pitch T. So four and mystery are making scared on a bigger table and deal to industry are defending wonderful. This playing they are perpendicular to this place. So do you like this? The bond between duck award and ammonia. So this shape is card off leadership

So here we're moving onto electron geometry. So this is the arrangement are electron groups. So if lone powers are of electrons about a present, then this will change our molecular geometry. So here we're going to be considering the electron geometry followed by the molecular geometries of each of the following. So my first example end to I'll draw out this first example. So molecular geometries and electron geometries are both linear for this example. But for my next runoff end to H two. Now we have a double bond present between our night trojans on. They have long hydrogen each and then they also have a lone pair. So that is why there electron geometry is tribunal plane are because they're three electron groups with SP to hybridize centers. However, in reality, they're molecular geometries bent due to that single lone path. My last example There's into h four. So we have Tetra hydro electron geometry. Why we have loan past present. So again we have that tribunal pyramidal structure

Over this question were shown these two structures of the sulphate ions. And, uh, these are two different ways of drawing the Louis diagram. And this question says, What is the molecular geometry and structure? A. So the structure were shown that sulfur has four bonds toe auctions and there are no lone pairs. So because all of the electrons are in these four clouds, you could say destruction, which therefore clouds no other lone pairs is Tetra Hydro, and that is option A.