Chemical Bonding । Class 11(L 3) । Fazan's rule । application । Exceptions of solubility
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- เผยแพร่เมื่อ 10 ก.ย. 2024
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About Thissolubilithemical Bonding । Class 11(L 3) । F
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Fajans rule and exceptions of solubility
Sir aapne ye joh bhi exceptions btaye hain solubility ke sb toh fazans rule se kar skte h na toh bass itna hi yaad rkhna hoga ki ye sb case me fazans rule laga de or confusion na ho iske liye humlog hamesha hi fazans rule lagaye toh ho jayga Solve? it will be easier 😅 ki solubility dekhte hi fazans rule ? Toh exceptions chhor de ? Bass ye yaad rkhna hoga ki beriiliyim oxalate and flourate zyada soluble hoga hoga sbse 😁
Tab tak k liye ok by
Sir kya padhaya hai aapne maja aa gaya sir jii 🙏🙏
Pw baccho ka payar hamesha apke sath rahe ga
❤️👑😎
02:58 Fajan's rule explains the polarization and distortion of electron cloud in ionic compounds.
05:56 Fajan's rule states that a small cation, bigger anion, and high charge on cation or anion form a better covalent bond.
08:54 Size and charge determine polarizing power and polarizability.
11:52 Cations with higher polarizing power have more covalent character
14:50 Fajan's rule application in solubility and melting point
17:48 Melting point is directly proportional to ionic character and inversely proportional to covalent character.
20:46 Exceptions in Solubility
23:44 Exceptions of solubility for carbonates of alkali metals and alkaline earth metal fluorides and oxalates.
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Be^2+ >Al^3+ in polarizing power as charge density more
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In terms of ranking them, cations have higher polarizing power when they have higher charges (Al3+ has a higher polarizing power than Be2+, which is higher than Li+) and when they are smaller, so polarizing power for cations increases across a period and decreases down a group.
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5:34
8:13
12:52
18:22
23:35
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At 17:00 caco3 bhi to decompose hokar CaO and CO2 banata hai
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Sir aapne expections of solubility mai bola ki lithium carbonate has lesser solubility than cesium carbonate how sir ???? Ye trend sahi hai ki galat i think ye galat hai ??
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Fazan rule op
Sulphates of alkali metals are also expections of solubility ryt?
done
Sir I have a doubt In 22.37 where you showed 4th exception
Sir Be>Ba>Sr>Ca>Mg in Covalent Character
Then Solubility should be its reverse
But you showed same order
Anyone who sees my comment and got the rason be reply back.
That is only the exception. Be jumps at the last instead of staying at the first. Same for oxalates
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Sir you didn't tell about covalent character and you went directly to examples belonging to polarization power
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09:43 Cl ke according bhi de sakte answer??
Sir size kese defined kare
kiska size bada aur kiska size chota.
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Sir solubility according to poor rich concep different trend and fazan rule different concept
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Sir jo exception aap ne bataya hei solubility of alkali metal carbonates woh alkali metal sulphate, nitrate nd bicarbonate mei v applicable hei kya???
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Op lecture
Where is formal charge concept
Sir at 17.42 minute I have a doubt. Apne bola ki T.S. increases as ionic character decreases.... But You have written that thermal stability is directly proportional to
ionic character....
So sir please clear kijiye doubt ko please sir.... 🙏🏻🙏🏻..
Awesome lecture
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Sir last mein in exception of carbonates...there u said H.E dominates L.E...but Li has more Hydration than Cs...then sir how come Li2CO3
who told u that Li has more hydration than Cs. Cs has large size than Li so its hydrated radii or hydration is more than Li.
@@the_sapient Li is smaller therefore more H2O will surround which will make it hard to remove the hydrogens....hence Li will have more hydration energy
@@dhimanr.kashyap5845 wait.... I am sorry. I was telling in isolated gaseous form not in aqueous form..... my bad.
@@dhimanr.kashyap5845 if i am not wrong Hydrated radii is more for Li+ than Cs+... Li+ and Cs+ are already seperated ions in their aq form...
But in the second last exception we are not talking about Li+ alone or Cs+ alone, we are talking about their carbonates...
Also what u r saying is hydrated radii and what sir is mentioning is Hydration energy which is the energy released during process of hydration..
Both hydration energy and hydrated radii are different
This is just what i understood...
I dont know if i am right or not, so if u have better explaination u can also share
Because when the charge on cation is more than 1, that's when hydration energy overcomes lattice energy
Sir at 6:57, as we go left to right size dezreases, so Be+2< Ba+2 , as per rule cation size should be small then polarising power should increase??
21:47 pe sayad aap ulta bol gye sir
Session was awesome !!!