Alpha is a constant depending upon the spectroscopic ground state. For S state, alpha=0(d5) For D state,( d1,d4,d6,d9), alpha=2 For F state(d2,d3,d7,d8), alpha =4
For all those who are confused about the alpha value, plz note that, If Eg orbitals are assymetrically filled then alpha will be 2, and if Eg orbitals are symmetrically filled then it will have value 4. Now if T2g is assymetrically filled then we will use spin orbit coupling formula.
Thank you so much sir for very helpful videos .sir could you please suggest us from where or which book we can practice of these questions so that we can gain good marks in NET exam.
rtk mwr, there is no proper dedicated books. But you can refer James E Huhyee for concept building and can solve problems from previous years for practice.
I have subscribed and i have told my friend to subscribe as well, he too has subscribed and is watching and learning regularly, thank you for the effort once again, well done. waiting for more question sessions.
Sir I have one doubt other than this topic. Magnetic moment is very well explained by u. Thanks In EPR spectroscopy, Pascal triangle is valid for only I=1/2 and non pascalian triangle is followed for I=1. What about I=3/2, 5/2.... nuclei? Do they follow Pascal triangle rule for intensity?
Hi .. I would like to thank you for uploading worthy lectures ,i am getting huge benefit out of it . I have gone thu formula rev of electrochemistry that was awesome. I request you please upload solid state :formula revision Regards, Rameez kumar
Question 91 of set A in dec 2014 asking us to find spin plus orbittal contribution of CrCl6 3- but in that case t2g is symmetrically filled right..then how can we say that there's spin orbit coupling
Thankyou Sir! but I wanted to know about low spin complexes, why term symbol remains same in uncomplexed and complexed forms of metals, like why we relate any complex with free electronic d configuration and determine the term symbol likewise because the concept that orbital magnetic moment in a complex form is to the tone of 1 is violated like that, such kind of question was asked in Gate 2016 I think, and this time's csir net
Yes you're correct that we have to consider whether the complex is high spin or low spin while determining the Term Symbol. Now luckily the complex here was a high spin complex so it was pretty simple. But yes when a complex is given and you're asked to calculate term symbol then obviously you've to consider the high spin or low spin nature of complex. The question you're talking is solved here by me, you can watch the explanation by clicking this link: th-cam.com/video/k0aGciFnygI/w-d-xo.html
Good explanation...I liked it... Sir...can I know generally stability of transition metal complexes for aromatic and non aromatic compounds? Pyridine though less basic than piperdine, forms most stable complexes with TM??? Pls...I need explanation....
Spin-orbit coupling guarantees a contribution by the orbital moment, but the converse is not true, i.e., if orbital angular momentum functions, it's not necessary that it couples with the spin angular momentum.
Very nice question, for involvement of orbital contribution in magnetic moment we need a non spherical environment. Now if you've watched my previous videos you must know that eg orbitals lie on the axes resulting in spherical environment whereas the T2g lies between the axes and spherical environment will be there unless and until it is symmetrically filled, if not then the environment becomes non-spherical. In case of eg orbitals if it is assymetrically filled then also as it lies on the asis the sphericality or you can say uniformity in the electronic environment stays.
All 'Bout Chemistry ...That is in case of eg orbitals there always will be spherical environment irrespective symmetrical or unsymmetrical filling of orbitals.
Very nice explanation and to the point conceptual content in the vedio.....Sir in your each vedio we learn atleast one new concept...Thanku very much sir ..Keep motivating us
Is there any problem with last question sir? We have taken the Delta value and wavelength as just opposite. Delta posses the unit in cm-1 and wavelength in cm. So the answer will be option (a) na?!
Thank you sir for this wonderful vedio. For spin orbital coupling formula we need non spherical environment and as you mentioned it is possible in t2g. But isn't there any probability for eg orbitals according to john teller distortion theorem. If not , why?.. Plz explain.
I have one doubt sir, When you are discussing about the formula magnetic moment =4S(s+1)+L(L+1)whole to the power 1/2 You said that it is due to spin orbit coupling but in huheey it is quite opposite. It says when spin orbit coupling negligible we have to use this formula. Plz clarify my doubt sir
This question is from CSIR DEC 2017 I think and it is based on Tunabe Sugano diagram. HS d6 will have 1 spin allowed transition and LS d6 will have 2 spin allowed transition.
suranjona, one of the methods which you can use is Freecharge app. Just download the app and make your account in it and use it like PayTm. Now for enrollment you can also use Freecharge to pay and enroll
Very nice question, See... If Eg orbitals are assymetrically filled then alpha will be 2, and if Eg orbitals are symmetrically filled then it will have value 4. Now if T2g is assymetrically filled then we will use spin orbit coupling formula.
sir I already solve the pervious year questions and read all basic concepts but I did not pass this exam I do not know what is my weakness now what I do . give any suggestions plz sir
![Orgel Diagram - How to use them [Easiest Explanation]](/img/n.gif)
Alpha is a constant depending upon the spectroscopic ground state.
For S state, alpha=0(d5)
For D state,( d1,d4,d6,d9), alpha=2
For F state(d2,d3,d7,d8), alpha =4
Thanks a lot...u have made my search complete....
Thank you for simplifying it ☺️
Thanks yaar.... Helped me alot
Super
Thank you, Etar jonnoi jhamela hochhilo,main prblm ta apni solve kore dilen 🙏🏼❤️
For all those who are confused about the alpha value, plz note that,
If Eg orbitals are assymetrically filled then alpha will be 2, and if Eg orbitals are symmetrically filled then it will have value 4.
Now if T2g is assymetrically filled then we will use spin orbit coupling formula.
All 'Bout Chemistry mna mt kriyega
Thank you so much sir for very helpful videos .sir could you please suggest us from where or which book we can practice of these questions so that we can gain good marks in NET exam.
rtk mwr, there is no proper dedicated books. But you can refer James E Huhyee for concept building and can solve problems from previous years for practice.
Thank you soo much sir for suggestion .
Sir that. Means we can have only 2&4 as the values of alpha.. No other value is possible ryt?
Very important examples are discussed. Concept get cleared. please also discuss year wise GATE questions.
Thank you, this video helps me a lot on the understanding of SOC in 3d system
It is much helpful to fine the magnetic moment . It is very helpful to me to clear my concept .
I have subscribed and i have told my friend to subscribe as well, he too has subscribed and is watching and learning regularly, thank you for the effort once again, well done. waiting for more question sessions.
U dnt hav idea hw much u r helping us...thnku soo much sir....ur way of explaining is toooooooooooooo gud....
Well explanation thanks.
Has helped a lot. Thanks! Keep it up.
What a teaching skils really ur explanation is very very good sir ....tq soooo much sir....
tnkuu soo sirrrr plzzz provide the all imp topic questions inorganic like nmr, organometallic cmpd ,group theory plzzzz 4 marks ke
Thanks for your exlantion sir.
very infomative and clear-cut video . Thank you sir
Wonderful Video Sir 🙏 Really Helpful 💖
Thank you so much sir for the neat explanation.
Thanku sir, very useful, from KERALA
👍
asslam u alikum!
keep it up, NOOR bhai
Sir I have one doubt other than this topic. Magnetic moment is very well explained by u. Thanks
In EPR spectroscopy, Pascal triangle is valid for only I=1/2 and non pascalian triangle is followed for I=1.
What about I=3/2, 5/2.... nuclei? Do they follow Pascal triangle rule for intensity?
Awesome .....
A Big thanks for u😊😊👌👌👌👌
You're welcome 😇
Superb video
Thank u so much sir..ur class is useful for us..and understood clearly
sir, I have an answer at last question is 1.74 BM in mathematical step 1.73(1.0078)=1.74 am I correct sir Please check it sir, please
yes here the answer is 1.74 and not 1.81
Hi ..
I would like to thank you for uploading worthy lectures ,i am getting huge benefit out of it .
I have gone thu formula rev of electrochemistry that was awesome.
I request you please upload solid state :formula revision
Regards,
Rameez kumar
Solid State I will make video very soon. Revision Video will be uploaded during one month before exam
Thanks for the information
Question 91 of set A in dec 2014 asking us to find spin plus orbittal contribution of CrCl6 3- but in that case t2g is symmetrically filled right..then how can we say that there's spin orbit coupling
You have to check for orbital contribution in the excited state
Sir please I want to attend MOT video lectures
Thank you so much sir ji
It's really helpful for me
Again thank you so much sir
Very much informative as usual!Thank you.
Thankyou Sir! but I wanted to know about low spin complexes, why term symbol remains same in uncomplexed and complexed forms of metals, like why we relate any complex with free electronic d configuration and determine the term symbol likewise because the concept that orbital magnetic moment in a complex form is to the tone of 1 is violated like that, such kind of question was asked in Gate 2016 I think, and this time's csir net
Yes you're correct that we have to consider whether the complex is high spin or low spin while determining the Term Symbol. Now luckily the complex here was a high spin complex so it was pretty simple. But yes when a complex is given and you're asked to calculate term symbol then obviously you've to consider the high spin or low spin nature of complex. The question you're talking is solved here by me, you can watch the explanation by clicking this link: th-cam.com/video/k0aGciFnygI/w-d-xo.html
well very beautifully explained.
Thank you 😇
Very good explanation sir
Sir in csir-j-2016 question which u solved u didnt consider o.s of metal while filling electrons in the orbital.Why?
Why for D2 term alpha value 2 and. Why u take lambda as negative value in the formula plzz explain sir
Lambda value is itself given in question as -625 cm-1
Good explanation...I liked it...
Sir...can I know generally stability of transition metal complexes for aromatic and non aromatic compounds?
Pyridine though less basic than piperdine, forms most stable complexes with TM???
Pls...I need explanation....
Sir please share the vedio for molecular orbital theory
Again as usual nice video sir.👌👍
thank you :)
are you sure that orbital contribution and spin-orbit coupling are same?
No, it's not the same.
Spin-orbit coupling guarantees a contribution by the orbital moment, but the converse is not true, i.e., if orbital angular momentum functions, it's not necessary that it couples with the spin angular momentum.
@@rajatrodney6327 have you any note on this topic that how d electrons show this two and which configuration shows it?
sir chala bhagundhi....keep top..
superb sir. thank you so much
aweaome dear sir
Sir why t2g unsymmetrically filled orbital shows orbital contribution..And why not eg unsymmetrically filled??
Very nice question, for involvement of orbital contribution in magnetic moment we need a non spherical environment.
Now if you've watched my previous videos you must know that eg orbitals lie on the axes resulting in spherical environment whereas the T2g lies between the axes and spherical environment will be there unless and until it is symmetrically filled, if not then the environment becomes non-spherical.
In case of eg orbitals if it is assymetrically filled then also as it lies on the asis the sphericality or you can say uniformity in the electronic environment stays.
All 'Bout Chemistry ...That is in case of eg orbitals there always will be spherical environment irrespective symmetrical or unsymmetrical filling of orbitals.
Very nice explanation and to the point conceptual content in the vedio.....Sir in your each vedio we learn atleast one new concept...Thanku very much sir ..Keep motivating us
Thank you sir
You're welcome 😇
I hope now you've understood it.
you are the best
💙
Is there any problem with last question sir?
We have taken the Delta value and wavelength as just opposite. Delta posses the unit in cm-1 and wavelength in cm. So the answer will be option (a) na?!
So nice sir u r too good
Thank you 😇
thank you sir for this video
and also for mention of your unacademy profile name .
😇
You're welcome
Fully informative
Sir if orbital is exactly half filled.
Then which formula will be used for calculation of J value
Excellent sir
Thank you sir for this wonderful vedio. For spin orbital coupling formula we need non spherical environment and as you mentioned it is possible in t2g. But isn't there any probability for eg orbitals according to john teller distortion theorem. If not , why?.. Plz explain.
Thanks sir for ths video
Good video
Sir, please do a video suggesting reference books for each chapter .
For this topic you can follow James E Huyhee
co wale case m apn 2nd formula apply ni kia ku ,or wha pr t2g orbital asymmetric filled b h
But why assymetrically filled T2g will result orbital contribution
Thanks sir for this lecture
Thank you so much sir
14:30- why orbital coupling is not occurring? Since it has 3d9 configuration so unsymmetrically filled T2g
3d9 doesnt have asymmetrically filled t2g
I have one doubt sir,
When you are discussing about the formula magnetic moment =4S(s+1)+L(L+1)whole to the power 1/2
You said that it is due to spin orbit coupling but in huheey it is quite opposite. It says when spin orbit coupling negligible we have to use this formula.
Plz clarify my doubt sir
sir ..how to calculate L for unpaired electrons more than 5 in d-orbital.
Sir agar Kisi qques me kewal magnetic moment Kisi complex Ka poochhta hai to kaun si value nikalenge spin or phir spinorbital wali
Spin wali
Thankyou so much sir ji
Thank you
the rule for alpha value determination will be same in all cases ,that mention above.
superb sir,but sir tell me how to prepare part-A for csir ,solve previous year questions enough?or should i go through topic wise?
Solving previous year questions can help, if you will give extra time to this then you might not get time to prepare for chemistry portion
Follow me on Unacademy there I've uploaded solution of part A and will be uploading few more very soon.
sure sir ,thank u
good teaching thank you
Very good sir.
thank you :)
Sir please share the video for molecular orbital theory
Special request for Noorul Huda Sir
I will try my best
Sir how did you calculate cfse value in last question plz do tell asap
I think 3rd question ans is option no.1....pls any one tell.......bec.of co+3 is a exceptional case i.e is low spin complex
Sir pls reply,
In calculation of Meff what are the different values of alpha? How its value is assigned?
Checkout the Pinned Comment by Trisha Ghosh
Sir pls make a vedio on how to calculate bridging and terminal ligand of metal ligand complexes
TQ so much sir
what is the condition for alpha value sir??
Sir how many spin allowed transition are possible for high spin and low spin d6 otahedral complex
This question is from CSIR DEC 2017 I think and it is based on Tunabe Sugano diagram.
HS d6 will have 1 spin allowed transition and LS d6 will have 2 spin allowed transition.
Thank you Sir
Thank you so much sir 💐 🙏🙏🙏🙏🙏
Eg orbital filled completely.then alpha value 4 where taken from. Eg or T2g
Can u plz send the link to understand the calculation of L and D2 system value
plz share Reaction Mechanism in CO-ORDINATION CHEMISTRY As soon as possible
Ankush, a video on Outer sphere and inner sphere mechanism is already there. Plz watch it
JI Thanks bhai ji . but please share water exchange , aniation reaction also because water exchange reaction is very important
Thanks sir
You're welcome 😇
i understod most of the lesson, but at 21:04, i don't get why the 2s+1 for D comes from.😅
Please tell me sir the alpha value for 3f,4f,5d,6s,1s
plz check the comments i have replied someone regarding this.
Cu 2+ also assymetrically field..??
Pls give the alpha values of S, P, and F
What is the meaning of spin-orbit coupling ?
Thank you very much..but i have not enrolled in your live classes sir as i have no online payment mode...but i want to join them ..what should i do?
suranjona, one of the methods which you can use is Freecharge app. Just download the app and make your account in it and use it like PayTm.
Now for enrollment you can also use Freecharge to pay and enroll
Sir how to find alpha? Is it always equal to multiplicity, like you have done for D2?
Very nice question,
See... If Eg orbitals are assymetrically filled then alpha will be 2, and if Eg orbitals are symmetrically filled then it will have value 4.
Now if T2g is assymetrically filled then we will use spin orbit coupling formula.
Sir magnetic moment m ueff. m alpha value uski multiplicity h kya sir
sir how to know element belong to which complex
How to calculate alpha values.
Sir, how to calculate the magnetic moment of Ni²+Fe2³+O4?
Please reply sir...
Thnkuh fr d video
You're welcome 😇
Thanku sir...
Thank you sir😇
why value of lamda is Negative??
Sir, what is spin orbital coupling?
Sir ye alpha k value kaise decide krte hn apne 2D ke liye 2 liya alpha ?
How do u calculate lamda value based on term plz tell d
Ok thank you sir
You're welcome 😇
and tq for giving class sirr
sir coching is necessary for net csir chemical science exam
I don't think so, I've qualified CSIR JRF without any coaching and I think it's possible by any other person. Just work hard and be regular.
sir but how
Solve previous year questions, prepare your basic concepts, focus on your strengths,
sir I already solve the pervious year questions and read all basic concepts but I did not pass this exam I do not know what is my weakness now what I do . give any suggestions plz sir
👍👍👍👍👍👍👍👍👍👍👍👍 very helpful
Sir how alpha is calculated?