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Explain in words why KCL in cubic cryslal structure hals larger quilibriu sepa- rallion betWccn iOns of 0.32 HIIL COIpared Lo 0.27 III or single molecule:...

Question

Explain in words why KCL in cubic cryslal structure hals larger quilibriu sepa- rallion betWccn iOns of 0.32 HIIL COIpared Lo 0.27 III or single molecule:

Explain in words why KCL in cubic cryslal structure hals larger quilibriu sepa- rallion betWccn iOns of 0.32 HIIL COIpared Lo 0.27 III or single molecule:



Answers

Cubic ZnS structure. Using $\lambda$ and $\rho$ from Table 7 and the Madelung constants given in the text, calculate the cohesive energy of $\mathrm{KCl}$ in the cubic $\mathrm{ZnS}$ structure described in Chapter 1. Compare with the value calculated for $\mathrm{KCl}$ in the $\mathrm{NaCl}$ structure.

Hi everyone be here. We have to have explained. Yes. Yes. At any junction submission of current must be true, correct. Can we define that if you want that must resume. That is curious. zero. That means to it's constant since charge is conserved. So at any junction in the given time, charge entering and living must we think that's all. Thanks for watching it.

So the structure of dimethyl aluminum clark is a suddenly going to be our aluminum in their middle with their chlorine on, then the anything groups at the edges and ask, basically, why having double of this is going to be the more likely once exist in terms of its natural elements. This is because in diamond few chloride, we have an ionic bond between the Koran and aluminum, and in order to fix that, we basically have to make it bigger in order to reduce the effects of the Ionic bonds.

So the question is gonna ask us about isil electronic ions. So what we need to start out with understanding is that we have isil electronic I o what that means for us, for this particular question is that these two ions are gonna have the same number off. No, I promise. Come. So u minus electrons. Okay, so then we need to understand what each of the words means. So the question asks us about an ion. So what you want to think back to is what an an eye on this on an ion is going to be negatively charged. So because it's negatively charged, all that means is that we're going to have one more electron or at least one more electron. More electrons, van protons. The opposite is a cat eye on. So what we need to realize about cat ions is to take positive charge. Okay, So according to be positively charged the way that we're going to accomplish that, we're going to have fewer electrons and we have protons. Electrons are negatively charged. Protons are positively charged if their arm or negative charge than positive. We have a negative, Adam, if we have less negative than positive. Then we have a positive. Okay, so now that we know that it's asking us about the size of the two, OK, so now what we should understand is that if we have a positively charged I on, then we know that there are more protons than there are electrons. And because of that, the electrons are gonna be held tighter and closer in towards the center of our Okay. So cat ions are going to have a smaller radius, then an ions, because the positive charge is going to hold the electrons closer to the center.

This question asks us why for isil Elektronik ions the alliance are usually bigger compared to the cat die ins. So I'm going to use a cat iron that comes from sodium and a nine that comes from flooring that will eventually be isil electronics to each other once they achieve their a stable, noble gas configuration. So sodium has one more electron than it needs to achieve a stable, noble gas configuration. And that is the noble gas configuration off neon. So any atom will be the most stable when it has the entire outermost shell complete. So you see that elect the electron here, which is in the three s level, is what is preventing sodium from achieving that stability sodium. They'll just get rid of that electron and obtain a positive charge. And then this happened, happens. The electron electron repulsion between these electrons will reduce because it last one electron, This will go down. Yeah, and when the electron electron depression reduces, the atom will kind of shrink towards the nucleus, get a move closer to the nucleus, and instead of the end being over here, it might be around here. I'm just kind of make the picture clear here, so there'll be a small reduction in house spread out. The electron levels are around the nucleus, and as a result, the Ionic radio off sodium is going to shrink a small amount. But the major thing that contributes to the reduction in the radio off sodium is the fact that the radi I often atom or ion, is measured relative to the last shell that has electrons so initially sodium had a radi I that extended from the nucleus to all the way up to the three ist level. Right? But now, um, because the electron and that level is gone and the to pay level is the last level, the outermost level, the radio is going to be measured relative to this to be level. So there's a big reduction in the ideas from that. So we already discussed the first reason why that radio is going to be smaller. And the second reason is from the change in the principal contact number end, um, 3 to 2. Yeah, no. Also caused a drop in them radio. So, in this case, the ionic radiation. So those are the two reasons why the radio off sodium Catan is going to be smaller. And when we move on to Florin, Florin knows that it can achieve a stable state by gaining more and more electron to complete this two p level. And when it does that, it achieves a negative charge and off in opposite to what we discussed previously with sodium the electron electron repulsion in this case will increase, and as a result, the atom is going to be a little more spread out than before because of the increased repulsion between these electrons. So they like to spread out further, and that will result in the increase off the Ionic radio I so increase bionic, the D I r down from the electrons spreading out from electrons spreading out further. So those are the two reasons why the flooring and iron is going to be larger. So this end effect is to make the floor in an iron larger in size. I'll give it a larger ionic ready. I compared toa the Saudi in Catan, and that is the explanation for why this takes place. So the result is and I am Ray D. I becomes larger then cat Dyan idea


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