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16. Assign the following bonds as nonpolat polar or ionic:Li__BrSi-_PC_0d N-HAl- H-~HMg17. Draw the electron dot structures for the following compounds. Determi pol...

Question

16. Assign the following bonds as nonpolat polar or ionic:Li__BrSi-_PC_0d N-HAl- H-~HMg17. Draw the electron dot structures for the following compounds. Determi polar or nonpolac: Identify the molecular shape and bond angles: SCh

16. Assign the following bonds as nonpolat polar or ionic: Li__Br Si-_P C_0 d N-H Al- H-~H Mg 17. Draw the electron dot structures for the following compounds. Determi polar or nonpolac: Identify the molecular shape and bond angles: SCh



Answers

Use the electronegativity data in Figure 7.4 to predict which bond in each of the following pairs is more polar:
(a) $\mathrm{C}-\mathrm{H}$ or $\mathrm{C}-\mathrm{Cl}$
(b) $\mathrm{si}-$ Li or $\mathrm{Si}-\mathrm{Cl}$
(c) $\mathrm{N}-\mathrm{Cl}$ or $\mathrm{N}-\mathrm{Mg}$

The question here gives us four different compounds a being silicon chloride be being cesium. Brill mind. See being ferric bromide. So, hee, we are indeed being methane C h four. So, first of all, we have to use the polling scale in order to help us predict what type of bond a particular compounds gonna have based on the electro negativity value. So, first of all, with silicon chloride, as if we pull up a table of electoral negativity values we know that slick in is, uh, try to find it here. It would be 1.8, and the chlorine would be three point. Oh, So essentially, the difference between the two the absolute value is one point to which indicates to us that it will be CO Vaillant and a very polar. So this would be a co Vaillant and polar as this is because any electric as a general, um, just of things Any Electra negativity between zero and 0.4 we can say is CO Vaillant and non polar um, zero point for want one is covalin, but slight polar, um, 1.122 is surveillance and polar and anything above two is Ionic. So if we do the same thing with three other compounds here, So cesium is your 30.7 minus the bro. Mean, of course, is 2.8 that uses, say, absolute value of 2.1. Which means that it is Ionic. Um, the next one, Ferric bromide, has a absolutely 1.8 minus 2.8, which is equal to one. So we can say that is going to be polar and then co violence. And methane, of course, has a Electra negativity. Like your negativity rather value of 2.5 minus 2.1, which is it gives us a 0.4. So that is going to be just co Vaillant and non polar. So that would be the bond types in these particular compounds that were given

The given problem is from the topic molecular geometry and shape and they're born angles. The problem states that sketch the molecular geometries and shapes of the given with their bond angles. First oneness Linear and the 2nd 1 is Tribunal by Ramadan. First is linear. 2nd 1 is Tribunal Bible in case of linear three atoms will be arranged in the form of a straight line and the bond angle here will be vanity degrees In case of tribunal by Pyramidal five items will be arranged at corners in such a way that it forms a tribunal by parameters, symmetry and one atom will be present at the center. Mhm. There are generally two types of born angle in this one is 1 20 degrees and the other one is 90 degrees. In these two types of bonds are also present. That is be even B two and B three bonds are known as equatorial bonds bonds, and B four and B five bonds are known as example bonds.

They want to see is the electro negativity table on page 35 to protect which of the bonds pairs are going to be more polar. And then we also want to indicate the direction off the polarity for each bond for those compounds that I have on the board here. So let's go ahead and just start with a and then we could work her weight down. So we're going to first be comparing carbon to pouring. So normally, whenever you have a hey light and another Adam, normally the highlight is going to be more electro negative. Delicious double check. So here we have carbon. And then there we have chlorine. So the difference between those or first the chlorine is going to be more Electra negative. So that means it's going to be positive here, going towards Thekla or in origin, say Delta positive. And the difference between those will we to do three minus 2.5. That's going to be zero point pie now. What about for our chlorine? Well, if we have to, Adams bonded together. This is just going to be non polar, so that's just non polar, so we can't really say what direction it is. Because if we were to come over here and subtract without three minus three, which is going to be zero. So this metal, our quarry chloral metal right here is going to be the more holder of the box. Now, over here, we have metal vs hydrochloric acid. Well, if we were to come over here and check So the carbon is 2.5, the hydrogen is too. So that means carbon is more Electra negative. So the hydrogen is gonna have the plus, and then we're gonna go out to left towards the carbon like that. And the difference between those is going to be 0.4. Now, what about for hydrochloric acid? So we already know the Hudgens 2.1. Deploring is three. So that means again the hydrogen is going to have the plus. It's gonna go towards the chlorine. And the difference between these is going to be 0.9. So hydrochloric acid would have the mawr polar of the two bonds. Now, this next one, we'll have methanol and this, um, silicon with the metal surrounding it. So the bond between this oxygen to this chlorine well, oxygen is 3.5. Carbon is 2.5. So auction is more Electra negative. We could also use the fact that they're in the same row and carpets left t to see that the carbon would be given the positive and the auction would be have. Or the auction would have the more delta negative charge. So it would be going towards the oxygen from the carbon. And the difference between those so 3.5 minus 2.5 is just what over here between silicon carbon. Well, so call it is 1.8. Carbon is 2.5 and we can also use the fact that they're in the same column and carbon is above to know that car binge theme or election negative. So that means it would go. I'm still Kontic Carbon like that and the difference between these will 2.5 minus 1.80 point seven. That means over here for methanol would have b'more polar bond and then, lastly, between carbon and lithium. So again we would know, since they're in the same row that lithium is going to be not as a literal negative as carbon. So it should be going from the left. You have to the carbon and between these. So it's 2.5 minus. Once that's gonna be 1.5. And in between lithium and oxygen so well, carpets to the left of oxygen. And we already said carbon is more Electra negative than lithium. So oxygen should be more Electra negative than lithium. So we'd go from lithium to the oxygen and so auctions 3.5 lithium is one, so that would give us 2.5. So the lithium hydroxide would be the Strathmore polar bond for

We were asked to classify the following bonds as Ionic Polar Co. Vaillant or non Polar Couvillon. My Ionic bond blue involved a metal and a nonmetal, so that means the exchange electrons and not the sharing. So one out of will donate one or more electrons to a different Adam Polar Co. Vaillant means that we have to non metals, but there is an electro negativity difference between approximately 0.4 and 1.7 and non Polar Co. Vaillant is if we have to, non metals whose electro negativity difference is less than 0.4. So starting with A we have our silicon to silicon bond in C. L three as high as I see all three. Now a silicon to silicon bond will be known polar Co. Vaillant because we have the same elements, so they will have the same Electra negativity ease. And that means there be perfectly equal sharing of those shared electrons Proper. B. We have our silicon to chlorine bond, and this is Polar Co. Vaillant and it is polar because the electro negativity difference between these two Adams is approximately 1.26 So that means there's an unequal sharing of electrons. Report. See, we have our calcium to Florian Bond, and this is, um, Ionic Bond, since calcium is a metal in Florida's nonmetal so Kelsey Maldonia electrons two or one electron or more one or more electrons to the flooring. So that means it is an ionic Juan, since it does not involve the sharing of electrons. And lastly, we have the nitrogen hydrogen bond. The electro negativity difference between these two Adams is approximately 0.84 so therefore it is polar khalil int. Since there is that unequal sharing of electrons, the electrons will be more attracted to the nitrogen than the hydrogen.


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