How to find Normal or Inverse Spinels? Simple tricks IIT JAM CSIR NET GATE AdiChemistry
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- เผยแพร่เมื่อ 21 ส.ค. 2024
- Simple shortcut tricks to find whether a spinel is normal or inverse. MgAl2O4, ZnFe2O4, FeCr2O4, NiFe2O4, Fe3O4 using CFSE, SPIN and other simple rules; For IIT JAM, CSIR NET GATE SET exams. By V. Aditya vardhan, www.adichemist...
You made the concept very easy sir...thank u so much
thank you . welcome.
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Damn, i will hear this information over and over again
Yes, though randomly to find the void somewhere at some point of time and reality mixup.
Very Well Explained. Thank You Sir 😇
Thanks for liking
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great. all the best.
Much helpful.. Concept cleared in very short time😊
Glad it helped. Most welcome. All the best.
Superb sir
I never gone through such trick very nice..👍
Welcome. Thank you.
Outstanding!
Glad you like it!
Watch th-cam.com/video/JvgX-QNc8gU/w-d-xo.html
Sir, I need to have your material...I have to attend the SET exam on October 20th 2019...How can i get ur material sir? Please help me sir..
visit: www.adichemistry.com/common/htmlfiles/csir-gate-chemistry.html
important topic, nice explanation 😀
Glad it was helpful!
강의 잘 들었습니다. 짧은 시간의 강의가 스피넬을 이해하는데 큰 도움이 되었습니다.
You are most welcome. All the best. 당신은 가장 환영합니다. 모두 제일 좋다.
This was very helpful Sir... Thank you for this video...
You are most welcome
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Thank you........Always welcome.
All the best.
I was in need of it n u showed me the way thank u
Nice to hear this from you. You are welcome. Thank you.
Superb explanation
Glad you liked it
-1.2 > -0.4 , what about the minus sign? really confused
Here negative sign indicates how much the energy of system is lowered that inturn is related to stability. Greater the lowering of energy, greater will be the stabilization. So dont take the true mathematical meaning here. Just take the absolute values otherwise.
@@AdiChemAdi woohoo spinels completed... Thanks...:) nice trick
Thankyou very much sir
Most welcome
for Alkaline earth metals is it always normal spinels???
yes mostly. however there may be a few exceptions too.
High spin and low spin to ligand pr depend krta hai
yes
Nice explanation. . Thank you sir
You are welcome.
How about MgFe2O4.It should be normal according to Nontransition and transition .But it is inverse which was asked in Gate 2019
Yes. You are right. And according to rule 5, there are exceptions to all the rules.
@@AdiChemAdi beep
Transition metal konse hote hai
Those which show transition in their properties. Like d-block elements.
Thank you sir 🙏🙏🙏
Most welcome
Sir if both A2 & B3 have zero CFSE then what will be spinel? 🤔
So no dependance on CFSE. Both are acting like d0 or d10 or simply like non transitional.
why is Fe 3+ high spin? in the NiFe2O2 example?
If it is high spin, that means the ligands must be weak field. Here the oxide is normally a weak field ligand unless the metal ion is very small and with high charge density like Co3+.
nice
Thank you.
I had bought your 2017 material but how could I get 2019 selected and newly added topics?
Just drop a mail to me.
How would one know which is high or low spin whether in any of the d configuration ? d⁴ d⁵ d⁶ d⁷ .
Depending on ligand field strength.
Can you please explain Co3O4
Look at Co3+. Greater charge and small radius. Hence even though oxide is a weak field ligand, the Co3+ ion is low spin ion with high CFSE. I think you got it. If not, please go through www.adichemistry.com/inorganic/cochem/spinels/spinel-structures.html
Sir are there any other exceptions??
Yes. So many. Please visit: www.adichemistry.com/inorganic/cochem/spinels/spinel-structures.html
Fe 3+ is always high spin?????
high or low are relative terms. In case of Fe(III) too, there are two states among which one is with more spin than the other. For example, in presence of strong field ligand, there is only one unpaired electron while in case of weak field, there are 5 such.
how about Mn3O4?
2) Mn3O4 is a normal spinel since the Mn2+ ion is a high spin d5 system with zero LFSE. Whereas, Mn3+ ion is a high spin d4 system with considerable LFSE.
Why do u say Fe is a d5 I thought Fe is in d6?
Fe3+ is d5
How about Co3O4?
Co3+ has more charge density and hence it is a low spin ion. Now you can decide.
Even in the presence of weak field oxo ligands, the Co3+ is a low spin d6 ion with very high CFSE. It is due to high charge on Co3+. Hence all the Co3+ ions occupy the octahedral sites. You will find more at: www.adichemistry.com/inorganic/cochem/spinels/spinel-structures.html