 Next write on nomenclature of cyclic alkane, nomenclature of cyclic alkane write on in this type, nomenclature of cyclic alkane in this type the ring is considered to be is considered to be a principal carbon chain, principal carbon chain if the number of carbon atom in the ring is more than or equal to the number of carbon atom in the side chain. In the ring is more than or equal to the number of carbon atom in the side chain, we will see if you have two rings then we will see what we will see like that what is the name of the ring, so for this compound the name is 1 and 2, see first of all if you have two rings if only CS3 is present then you can directly write methyl cyclohexane, one methyl is also not required, if you have CS3 and BR, BR and CS3 present here then numbering we have to do 1 and 2, so its name is 1 bromo 2 methyl cyclohexane, what is the name of this compound? one propyl, one propyl, one propyl, one propyl cyclo propyl, what is the parent chain in See if you have ring and side chain and the number of carbon atom in the side chain and in the ring is equal, right? So in this case ring will be the parent chain and this will be the subsequent chain. So again, emotion. The rule is what? Either ring or this side chain is the primary chain. You cannot talk about it with 1, 2, 3, 4, 5, 6. That's not possible, right? So the rule is what? Stop talking. The rule is what? If the compound has cyclic as well as side chain of structure, then either the cyclic compound or the side chain will be the parent chain. The condition is what? If the number of carbon atom in the ring is greater or equal to the number of carbon atom in the side chain, then ring will be considered as the parent chain. If you take this example, then we have free carbon atom in the ring and CH2, CH2, CH2, CH3. So in this case, this becomes the PC, right? And PC is not free. It's parent chain, right? It's parent chain and here this is the parent chain. So for this one, this becomes the subsequent. Ring becomes the subsequent, right? Cyclo-propern. Cyclo-propern. So it's my name of the second one. So will it be cyclo-propern. Cyclo-propern. Cyclo-propern. Cyclo-propern. Cyclo-propern. Again, the one is root. So this is the thing. The name of that. The name of this compound is... ... this is a variant chain with props. Profile... ... profile cyclo- Propane. Propane. No... ... phase. If it is written it means it is patol in the first column. That is understood. One profile cyclo-propylene, if you write that is also fine. So sir, in fact, the attachment middle is being... Then you have to write down the position, yes. Attach the middle position. Like, CSA, C-h triangle, CSA. It won't profile then, then it becomes a cyclic complex. Accordingly. But in that case, you have to specify the position. Oh, it's a... why would it become complex? Wait a minute. So, this is... this is butane. For the name of this compound, yes, we can write down one cyclo-propylene or simply cyclo-propylene. Cyclo-propylene. You take. Okay? So, there also we don't have to write one. Not read what? If you write, it is not wrong. But if you don't write, it's also fine. Because once you write only cyclo-propylene butane, it means it is present at the first carbon. That is understood. What is the name of that compound? It's a compound. Which is the parent chain? This one? Yeah. One, two. So, what we can write? One-ethyethyl-cyclo-propylene. Cyclo-propylene. Cyclo-propylene. So, shouldn't one-ethyl-propylene write it? Cyclo-propylene. Yes. Cyclo-propylene. Cyclo-propylene. Once you write, it's actually one-ethyl-propylene. Cyclo-propylene. Cyclo-propylene. Cyclo-propylene. Sir, if the straight chain was a beauty, then that will be the... this one? Yeah. No, sir, but like, it's in the middle. So, there will be one cyclopropylene. Two cyclopropylene. You're saying this. CS2, CS3. Yes, sir. Not bad. There also is a parent chain. Why? Because in this... Then it will be two cyclopropylene. Then it will be two cyclopropylene. Correct. Right. Because that will be the parent chain. The example was the right one. You see, if you write down this way... That's again two cyclopropylene propylene. Sir, the one with the right one is cyclopropylene. It's just two cyclopropylene. Stop talking. What is the name of this compound? Two cyclopropylene. Chadanaya. Cyclo-propylene. Cyclo-propylene. Cyclo-propylene. This is cyclopropylene. Cyclo-propylene. Cyclo-propylene. What about this one? Cyclo-propylene. In this one, this ring is this. And the side chain is this. Side chain has four carbon atoms. Right? So the parent chain will be this. One, two, three, and four. Two cyclopropylene butane. Sir, I didn't have the line between the two rings. And I just attached them like this. That is a spiral compound. That is a spiral compound. Do you have a question? Mr. Gheer. Mr. Gheer, what is your question? What if we have here CST and C, suppose this CST is not there, we have CST and CST then we have CST, CST and CST and CST and CST then we have CST and CST then we have CST CST and CST then we have CST and CST, CST and CST and CST then we have CST and CST and CST then that is how One bromethyl, two 2-glutamethyl cyclohexane, so one bromomethyl, two glutamethyl cyclohexane same, Chaitanya this one, dry chloromethyl cyclohexane, you can understand this if you have only CS3 present on the ring, right this is methyl cyclohexane, right if you replace one hydrogen by chlorine what is this, chloromethyl cyclohexane, one more chlorine is dry chloromethyl cyclohexane again one more if you replace it is dry chloromethyl cyclohexane, right this one is dry chloromethyl, what about this one, there is a one bromethyl cyclohyxane, it is I am going to say one bromethyl cyclohyxane, one with high cyclo-propyl, yeah cyclohexane, cyclohexane, first carbon will have methyl propylene, so one with high cyclo-propyl and cyclohexane, the bearing chain is also one, yeah that also you keep, yeah it is fine, it is fine but here we have three different conditions, that is two different conditions, this one and this one, when you say methyl cyclo-propyl then it is not sure that whether it is attached to the first carbon or second carbon on this shouldn't be highly appropriate for it because see it is a substituent, okay substituent, so for this substituent this ring is the parent chain and this is the substituent of this substituent right, this is overall it is a complex substituent, so for this one we will write substituents first and then the parent chain of the substituent which is methyl cyclohexane, so but shouldn't be like, now tell me what will happen, this carbon is first because it is a methyl propylene chain, any one of these you can do two, okay this one cyclo-propyl methyl, because you see in this one you can take this or this or this as the bearing chain, but this is not possible because only one carbon we have, here we have the carbon, here we have six carbon, so this will be the parent chain, now with this parent chain, so this becomes the primary substituent because it is directly attached to the ring and this becomes the substituent of this substituent, which is secondary substituent, okay, so it is methyl, if it is CS3 only it is methyl cyclohexane, now this one hydrogen is replaced by cyclo-propyl correct, so it is cyclo-propyl methyl cyclohexane, yes, cyclo-propyl methyl cyclohexane, one bromote, this one, one bromote, two ethyl, one methyl, also practically, right, so it is one bromote, two ethyl, one methyl cyclopentane, okay, can you repeat, one bromote, bromote ethyl methyl, so one bromote, two ethyl, one methyl cyclopentane, so why do you write one and one, two and then one, bromote ethyl and then methyl, what about this one, one bromote, one chloro, two iodo, cyclohexane, okay, what about this one, one, two bromote, one chloro, one iodo, cyclohexane, okay,