solid state 12th chemistry || chapter1 || part5 sachin sir #solidstatechemistry @a2zpractical991

Hello everyone, how are you all doing? I think you're all having a great time in your lives, and kids, make sure you watch all the A to Z practicals very carefully. I've finished the entire chapter on halogen derivatives of alkenes for you, and now the chapter currently ongoing here is the one you're referring to. Where is your solid state chapter going, which is your chapter number 1, 12th chemistry. Today I'm taking you there, part number 5, the child is also saying part number 5, so please read it out. So, part number 5 is yours; parts number 1, 2, 3, and 4 have already been covered here. Watch him carefully, look at him very closely—I have taught him very thoroughly. So please, after watching part 1, part 2, and part 4 up to part 4, you'll reach part 5. Alright, today I begin with part number 5, which is chapter number 1 on solid state, and I am reading Sachin Shukla. Alright, let's begin without wasting any time here. Look here, we must have noticed that all these things have been covered up here, and done so with very good imagination. I've made some very, very good crystals here, and some very good things too. I really hope you watch this. Today we will study packing efficiency. Today we are going to learn about packing efficiency. Do you know what packing efficiency is? We'll determine the efficiency of how well a particular item is packed. Suppose I take a box, put 10 items in it, and then take the same box again and put 5 items in it. What kind of box is it to 10? It's packed very well, I'm a child. The one with five layers, I must have done something wrong, that's why its packing efficiency is very low. What is its packing efficiency? That 10th item is very heavy. Let's now see the packing efficiency even within our solid crystals. Look at this crystal, look, it's filled here, it's filled here, meaning the most home. But look here in the middle, I'm looking in the middle, there's some empty space here. Are you looking at the beech tree? Look, I'm watching, look, I'm watching, is all this yours? It's empty, there's nothing there. How well it is filled and how much empty space remains in it—these things we can all calculate. But now we're going to look at packing efficiency, that is, these small atoms, these tiny particles. Inside a cube, how tightly it's packed depends on certain formulas that children learn. Alright, let's quickly look at those formulas, let's take a look at those formulas. Using these formulas, we calculate all these things. Alright, let's see what the formula has to offer. Packing efficiency can be measured by how tightly particles are packed together. What did you tell me about packing efficiency, and what can we do through it? How tightly packed the particles are, we can find out and measure it. Alright, let's see. Look, what is packing efficiency, kids? It is nothing but the total volume occupied by the particles in the unit cell. divided by the total volume of the unit cell, then multiplied by 100. What is this, the total volume occupied by particles in the unit cell? into the total volume of the unit cell into 100. Theke, we'll go through all this stuff together, just give me 2 minutes of your time. What am I supposed to do with all these things? I'll explain them to you very clearly. Hey, kids, one more thing, All those things I uploaded, like Part 1, Part 2, Part 3, and everything else. If you like it, please support me. There's a comment box below this channel, so please leave your lovely comments there. Alright, let's get started. We begin with our start, that is, the total volume occupied by the particles. Look, these are all your particles, you're seeing them, right? What's yours? Particles, they occupy this much volume. And this is our total volume, this is what our total volume is. Theke, you won't understand this, either. I will make great efforts to ensure that you fully understand these concepts. Okay, let's look at the packing efficiency of metals. Hey, kids, we're about to figure out the packing efficiency of whom? those who discover metals. So, how can we determine the packing efficiency of metals? There are certain steps involved in this. Concise step-by-step solution, radius of the sphere, volume of the sphere, You learned in class 10 that the volume of a sphere is given by the formula: 4/3 πr³. third is the total volume of the spheres, and the last one is packing efficiency, And the last one? Empty void. That's 4-5 steps. What can we achieve in terms of total packing efficiency from this step? You can take it. First step, what should we do, we'll find the radius of the sphere, radius in MATLAB is called 'r'. Doosra, volume of the sphere is known, What is volume, tell me quickly? 4 by 3 children, pi r cube, from there. Total volume of the sphere but this total volume depends on it, Will you be given FCC, will you be given BCC, A simple cubic will be given. As you have read, the number of particles, Number of particles, tell me. How much is BCC, sir? It's 2. It's 4 for the FCC, sir. How much is it for a simple cubic, children? Yes, sir, it is number 1. To this, whatever answer I get from here, What needs to be done with these 2, 4, 1? will multiply, will have to multiply, We will see how it will be given to us. What should I keep for you, children, packing efficiency Just one more, what do we have to remove? empty void Remember that, oh my dear, remember. We will perform three derivations on this. 3 derivation, very easy I will teach you in a very good way. I want to see you. We will read and compare them. We really need these things badly. What happened, did you understand? First of all, what will you remember, I need to find the radius, sir, What else will you remember? I need to find the volume of this sphere, sir. What will you remember, third one? I need to find the total volume of this sphere. and the fourth, packing efficiency after that, empty void Alright, let's take a look then. How can we find this out? We see, first, First, we will see. packing efficiency of a simple cubic unit cell What else can I say? packing efficiency of body centred cubic unit cell What exactly should we extract from your third hume? Packing efficiency of face-centred cubic unit cell. I'll show you the three of them. Alright, I have written about three compressors. You will understand these things very clearly. Alright, What all things could possibly happen from such a small amount of effort? becho, You understand these things. Alright, Alright, then, We will read the first one now, children. Alright, then. We will read first, packing efficiency of a simple cubic unit cell MATLAB simple cubic unit cell that we have What is its packing efficiency? Alright, then. First, let's look at its diagram. Look, That is your simple cubic unit cell. If you know the simple cubic unit cell, What kind of thing is this, yours? Okay, then. There are 8 corners. 8 atoms present at the 8 corners, Alright, then. How much have I taught you all? I have already told you everything. What have I done? That one on the back is showing you the part. It's a small part, This one, You can see the part behind it, right? I have taken it here, this place. What all have I done here, anyway? I didn't take the one above it. The part behind it has been taken. Alright, then. There's no doubt about it, is there? Hey sir, where on earth did this come from? simple cubic unit cell That was the previous part, Alright, then. Alright, then, Look, Now tell me, What was the first step, tell me please? We need to find the radius of the sphere. What to take out? radius of the sphere Okay, then. Do you remember, or does everyone remember? the radius of the sphere, Now tell me, Look, Its radius is half of the circle's. its radius is half of the other's. or this entire thing, What you are seeing right now, We call them edges. What do you say? to edges, Alright, then. It became an edge. I've reached the edge. So, we have edges. Usko edges represent karte hai, Then, who is equal to us? He is R's, MATLAB Sir, he is our equal. 2 R ke, Sir, who is equal to us? 2 R ke, Look, R is equal to, What will happen? A by 2, Okay, then. Two kids will go. Below Then I got it, radius of the sphere What did you get, kids? radius of the sphere Alright, then. You will no longer have any doubt. At step number 2, Step number 2, Done, done, okay. Did I say that? I need to find the volume of the sphere. What needs to be removed? volume of the sphere Then, we proceed to step number 2, children. In step number 2, Sir had told me that, Find out the volume of the spheres. What are you trying to find out? I know the value of R. Look, What is the value of R? A by 2, Then I'll keep your R value safe. Look, 4/3 π Help me, What is the value of R? Hurry up, come on! What is the value of R? A by 2 What is it? A 2 by 2 cube, Alright, then. How can I write this? 4/3 π A cube, if you cube 2, then 8 will come, Alright, then. Everyone knows it, You, this one you can cancel it out, How will you cancel it? Bro, give me some fat, fat. How will you cancel it? 4 1 ya 1, 4 2 and 8, 3 2 no, What will 3 2 be equal to? 6 then, A cube, What will remain of you here, then? 6 That's all there is, isn't it? Okay, fine. then you need the volume of the one particle, then the volume of the one sphere, then the volume of the one particle, How much did you get? 4 pi A cubed divided by 6 pi times a cube by 6 Now tell me, What exactly were you supposed to find out, third one? total volume of the sphere What needs to be found out? total volume of the sphere third step, that is the total volume of the particles, the total volume of the particles Tell me how you'll figure it out, Never do that, What did I tell you, my dear? Find the simple cubic. Take it out, that one. simple cubic in the simple cubic system, How many particles are there? 1, Are you there or not? in a simple cubic number of particles 1 Okay, fine. Alright, then, I'm writing something here. To look with concentration, for simple cubic in itself for SCC, SCC number of particles How many are there? Say it. 1, How many are there? 1, number of particles 1 then, total number of particles occupied total number of particles occupied by that is, What will happen? Look, Don't ask for the total volume, Then this is yours, There is 1 particle. You will multiply it. which came from your simple cubic, number of particles That is your 1 particle. How much is it? pi a cube by 6 into in a simple cubic How much is it? 1 Alright, then. Always in the step, What will you do? Say it Speak quickly, Always in the step, What will you do? Always in the step, Sir, I will do this. If I am given an SCC, then its number of particles, Sir, 1 is hot. Okay, then. oh, It will keep multiplying. the volume of this sphere will be yours What will you do? always multiply Tell me once again, Sir, SCC's 1 is a hot one, I will multiply it. Okay, then. Alright, then, If you have multiplied it, Then you will get this. Okay, then. One does not have any value. Okay, then. then, a pi a cube, 6 will come, What will come? pi a cube, 6 Okay, then. Alright, then, Ours is the one. It's the last one, We last, MATLAB What remains with us in the end? After the third step, fourth step, Say it Father, please child What happens in the fourth step for us? What do you get? packing dubious, CNC Alright, then. Alright, then. We'll see in the final step. We have to get out. packing efficiency A little space is lacking, I suppose. Then I'll just slightly lift it up. Alright, then. Here you go, I adjusted it a little bit upward. There should be no doubt in anyone's mind. Alright, then. Alright, then, What do we need to find in the last step? packing efficiency So, tell me, kid, What is the formula for packing efficiency? Alright, then. Say it. What is the formula for packing efficiency? Tell me the formula for packing efficiency. Alright, me, Hurry up, hurry up, come on! batch packing efficiency, We know the formula for packing efficiency, Say it, Alright, then, Tell me the formula for packing efficiency. volume occupied by the particles in the unit cell What happens? volume occupied by particles in unit cell in unit cell upon total volume total volume of unit cell Alright, then. into 100 That was it. Okay, fine. The formula for packing efficiency was this one. volume occupied by the particles in the unit cell divided by total volume in 200 Alright, then. volume occupied by particles in the unit cell Alright, then. total number of volumes I need to write it here, I forgot. occupied by particles in the unit cell Do not write the unit cell. How much is it? Tell me. pi a cube by 6 upon total volume of the unit cell What is total volume? Tell me all of you, What is total volume? a cube total Look, total volume Will you represent my volume? The volume of a cube volume Hameysa, It's hot inside the DM cube. It is in cubic centimeters. to What will happen to you? cube to the total volume of the unit cell, What will happen? a pKa, a cube If you don't know either, Always keep him in our memory, total volume of the unit cell a cube Say it. Hameysa nichay wali, total volume of the unit cell What is it? A cube will come. Alright, then. What will come? A cube will come. Let's go ahead now. We're moving forward. Look carefully媒介 here. Now I can write this as pi times six cubed. This, I'm bringing down here. Tell me, when cube cancels cube, what is the value of pi, children? Then you need to extract the Impity Void. From that, see what you need to extract? Inpity Void What should you remove to get rid of impurities? − Remove impurities So, in exams, multiple-choice questions often come up asking for the packing efficiency of a simple cubic structure. What would you write? 52.36 But if you were asked the children, "Tell me, what is the empty void in a simple cubic unit cell?" then what would you write? Only that one: 47.64 How much will you write? 47.64. Okay, fine, let's go. I think you've understood this. All have come to the yellow place. Shalu, the second one, if we do it, will be very easy, okay? Tell me. Packing efficiency I, D, F or F, E, D. Uh, two triangles were here, definitely. And what are those two triangles doing from Patha Gorish Stiram? As you can see here, let's proceed to clean this large center. How much is it, Mara 90 degrees? If off, AD, if this is our 90 degrees, then in front of this What is the square of the first side plus the square of the second side? Show it. We honestly do it. do do I have been staying with Khushi Shri. We want to see that Ker kē Car kē Whose validity will expire today for the FD? Alright, we've found it right here. Next, a wave triangle is being formed here, look F A D here again A D F Looking from Dehna, the triangle is ours, A D F What is our angle here? It's 90 degrees, so we have the same here as well Come on, tell me how much radius is coming in? How many circular covers has it covered so far on this triangle? One, two, three, four You know, sir, this is one radius of the circle. A radius is equal to 2R how much does it become for you? So, what will be the value of our F? Sir F's value won't become our 4R. So, I'll keep the 4R in FK Jagaphe, no doubt about it, nothing at all. There will be no doubt, okay So, Sari, A2 will be removed, right, kids? Okay. Alright, so let's see, 4 by 3, alright 4 by 3 by, root 3, root 3 into root, root 3 if you cube it then what will happen 3 root 3, A3 your 64, root 3 divided by root 3, what will happen to your root 3, it will cancel out, okay So, √3 cancels out with √3, correct? If you cancel this with 4, you'll get 16—how much will you get? 16, that's what you'll get here, correct. √3 times π over one cube—what will you get? 16, correct. So, what have you obtained here is the volume. Then, Mahni, we are poisoned. What's up, darling? Why are you so restless? Not even love can make him leave India... Even if you are not a poison, you are still poison... They keep wanting to tell you Love is coming, we too are in love, but there's a twist. Who is Pele? You're the one who passed through this circle, your B.C. pass, if B How many number of opticals in C? Number of optics In KC BCC, how many are there, numbers of opticals, do two of these What do you do for dal volume? If a simple cubic is given, then If given 1 to BCC, to whom will you multiply from 2? The volume that will now come to you, O Lord, will be the same as before. So I do it. Volume Occupied by Particles in unit cell will be: whatever value you get here, root 3 pi a cube by 6 multiplied by 2, cancel this 2, you'll get root 3 pi a cube by 8. That's it. Now, about We want to know your intention, so that we may understand the root of your desire, even if it is hidden deep within your heart. If I can root everything, then what is A11y? But they're talking about VolD. Root 3 pi times a cube wall area by eight, and the total volume of our cube, your krisa khala outside today This is the Thikub Nazane Azin Azar Azeen Azin, our Cube-shaped one, who goes to the Dalawala Diyar. You will only get it when the Fras option is selected by the employer, Khagraga. Your next question. Some Khadu women workers. Beget big workers What else is there to know, or mass know? What's the best thing about sum? Tell me the three steps clearly. From which step do you start cautiously? First, your dedicated web design has already been done, so you won't be doing it again. Don't remove anything. I won't remove anything from the text, nor will you. Just proceed. All right, image bal Rs bg one, column read balā thūā. The middle one is at 90 degrees; if your angle becomes 90 degrees, then it's perfect, brother. Just place it properly, okay? Now, show me how to set the therm. How do you set it? Look, if AB is 90 degrees, and the angle between A and B is also 90 degrees, then it's correct. 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Okay, let's go. What can a hag do now? What can I do now? You can also remove root 2; see how it is removed, check the method of how it is removed. root 2a, look, this is 4 In "Kikwar," we write 4 as 2 x 2. A certain 2 and write Look and see written 2 x 2 from Tulie Tulaha 1 x 2 Write 1 x 2. The bath at Bahol, Arica. You are experiencing 800 severe ARRs. 2 Who is Piach? So, Volim is now my guy's sujuri's forehead, a particle. Will it be? Because we don't know how many particles are inside it are. Now we know, from the Apsis, that the band has four particles. First, remove the Vanka, then the paitakal sutch khyvughah will be the word butter pi power arkuub bone Jalo Word three Dree D Pe Arkhi Shukab Cube Tazaao Imb Ti Sitsthathap Phoor Ki Yahhi Tachchany Dihangchay 4 2 2 Nei 4 Exactly 4, that's 12 Then 1 cube will become equal to 12 root 2. What will happen? 1 cube is equal to 12 root 2 Sir, I'm here 1 cubic is equal to what will become 12 root 2 Right on I sweeten it for him. It's coming, isn't it? No one understands this mess so much So, my friend, you'll come, right? First of all, you need to eat a lot, but you also need to multiply the pressure of your outer layer. c. Welcome to Student Reviews Hi You have four particles, and the volume you have to multiply by is from your pi. Now, looking from Dia, you have this four times four times four, how much will it become? Twelve, so pi times a cubed over root two pi times a cubed over root two, okay? These can cancel out. You get four, one, go one four, that's it. Now total volume. What is the total volume after removing the rocks? Why can't the videos play? Let's talk about your specific issue. That's what happens—everyone will know. Okay, now tell me: what is the total volume occupied by the Y particles in the root cell? It's one cube divided by the root of the particle volume. Now, from these particles, which one are you writing about? One cube? So, who did you think you were when you fully collect it? 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You have studied hard, wherever you have been. What will the packaging efficiency be? So sir, this is our Aratha 52.36% Tell the second one, kids How much will the import duty be? Imported white will come in at 47.64% Will it rain heavily? So, who will come after the big one? So sir, my percentage was 68% here. Tike and Impurity White How much will it cost? So this is 32% And the last one, what was yours? Your FSCC Packing Efficiency The packing efficiency was 74 in this case, sir. So, the percentage of empty space that will remain is 26. That's correct. It seems quite high when you see it. I have done everything together so that you don't get hurt, so that you don't forget anything Tikke, meaning those who wear formal attire in this context He applied it here too. And he applied it here too, the sticker. I am your humble servant. The cricket is moving forward. We will continue reading ahead. Ingoan Karan Cubic System We are going to make a panini Packing efficiency in simple cubic unit cell is 52.4 68 in BCC and 74 percent in EFCIS And how will you extract MPT from it? MPT White 100 minus is working fine Look, in SC, the promise is simple cubic. Simple Cubic The snake is right there, come on, let's go see it. What will be its coordination number? How many people will join the Simple Cubic Summation? One two three Four or five of them You can see it, everyone Join these people and see for yourself. All the people were eager for these seeds. Each particle, even if it were to carry a burden, would not be understood unless it had six to six drums. Everyone is finding out, so what will the coordination number become? What will be its coordination number? 6, Move forward, me, move forward what? Come on, next we'll check out BCC, Your packing efficiency in BCC is 68, which corresponds to a coordination number of 8. We will understand the concept of this. Look, this is your body-centered cubic unit cell. There is a particle in the middle, Are you seeing a particle in the middle? Yes, sir, it is visible. Now, how many people is this particle thing in between connected to, kids? One, two, three, four, five, six, seven, eight Eight atoms attached to all its corners. the eight atoms located at the corners of a simple cubic unit cell So, the central part of the body-centered one remains. It becomes the most joint. Alright, got it? Come on, I told you, I'll make you understand. Look, four in the layer above, One, two, three, four, All of this is attached to this. Last, What is all this about now? six in its open layer, above the layer Alright, I'll show you. Look, this is your simple cubic, The FCC has structures. What happens at the FCC? Atoms are present on the face. Now these atoms, How many people have joined? Joined by 12 people, Come on, look, if you understand, So, look carefully, Look, this is your face-centered cubic, This is a cube, this is the second cube, This face-centered one, On the previous cube, Here is connect. Alright, so look, Look carefully, Look very carefully, Only then will you understand, this will make you realize, Alright, come on, let's see. First of all, this 6 is connected to its faces. One, two, three, four, That makes four, then. Now, look here, How will this connect with the inside? If you don't want to get caught in such complicated troubles, So just show this much respect, in a simple cubic unit cell, How many are there in a simple cubic unit cell? 6 are there The coordination number in BCC is 8. And how much is it in FCC, kids? 12 is the number. How much is 12, Alright, 12, you can see it, For appearance's sake, In the manner of You know, the one in the middle, the lack of it... Alright, One, two, three, four, four—this is how it connects. After that, Connected from the upper level. Five is connected to the lower phase. Six. It connects from the front face, it connects from the back face, so eight has been achieved. And the four outer ones, when the second cube comes, they maintain their connection with it, okay? I am moving forward here, the number of particles and unit cells in one gram of the metallic crystal This is a small formula; by executing this formula, a formula chain is generated, and that formula I am moving forward here, the number of particles and unit cells in one gram of the metallic crystal Look, kids, you've established a relationship between molar mass and density for Bagera. What did you obtain from that relationship? Molar mass from Zirconium molar mass from Zirconium, right? One by one, your own and your number's particle, and what's happening here Molar mass, whose corresponds to Evergathers number? Whose corresponds to Evergathers number? We will calculate based on this. You will now be according to this. You talk to yourself. Kouni Ning Farach Prekem Ek Lag. Do Wan Laga Se Garsh Shien Zaroor Hai Kyun Jab Unhen Odinah You will become happy because He is coming, the one who is desired by the heart. Show it, then now move on and make it, so that you can hear the grains, which I am doing how How do I do this? If I heard five points four, the answer is one point four, and in four, one point... It's just that, in such a case, yes, fun, well, this gap, this one Together and this will go your way divided It will go to the thyroid. Alright, this will go with you; it won't be left behind, right? If possible, it burns the fuel. What will happen to you now? x to n כאב אינטוא n What will this become from n to n? So x your acuity Okay? So, whose came here, this one? number of unit cells in x grams. Did this come to you? formula? number of unit cell in x grams So, listen carefully, kids If you are unit cell This unit cell will be used to find out This will come to find out the unit cell. Then you'll put this one on. x Your own equity If you have n of The particles came to find out This one The particles came to find out The other is the sky, it is vast, and that you are the corner, because I am the one who is narrow. What, can't you be us? We're the damn weird ones in this news story. And I can't explain exactly what he did, I don't know why, because of the fight with Y class, because of the days I have kept the coconut oil in a bottle for a long time. How much time is it taking to make videos?