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.
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
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
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: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-k0aGciFnygI.html
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?
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....
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
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.
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.
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 can you help us to remember periodic table.like to solve magnetic moment questions we have to remember electronic configuration.is there any simple trick
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
