Sir.... For hydrogen like atom value of Z =1...for the orbital degeneracy it is directly as the square of n.... Although you got a correct answer while using this energy formula...
In Last question if nx=1,ny=2 energy comes out to be =h^2/8m(17/4a^2) To calculate degeneracy 17 can be arranged in 2 ways 1^2 4^2 &4^2 1^2 Degeneracy come out to be 2 not 1... I think nx should be equal to 2 and ny =1 ....Then only the degeneracy is 1.. What do you think? When you have time do reply...Thank you
Organic Chemistry, in order to assign Degeneracy of 17 you've taken nx=1 and ny=4 and you're considering it to come our 17 just by taking numerator in consideration. But the question is different from usual questions, the box is rectangular, if you our your values of nx and ny in complete formula of energy where denominator is 2a and a then you won't get that value of energy which is given in option. Just try and check. 👍
Thank you very much for these videos. It's really interesting videos.. I have learnt alot from these videos. Sir could you please teach some spectroscopic techniques. Like NMR that you have already done. Others like x ray diffraction and others.
I have doubt on last question explain sir 17 is (4^2+1^2)..nx=4,ny=1another possible nx=1,ny=4 so degeneracy is 2 so option also correct ???pls reply sir
Last question was awesome.. nice explanation.. I am thinking that if degeneracy=1 would be given in both option.. then still Option A would be correct answer.. Because energy is lower than other option . So that satisfied 1st excited state.
Not considering the electronic spin ,the degeneracy of the second excited state (n=3) of hydrogen atom is 9 then while the degeneracy of second excited state of H^- ion is ? Sir please help me with the solution of this question 🙏🙏🙏
Jamal Adyan, I've made a video on Michaelis Menten equation and Steady State approximation. You can watch that... For chemical kinetics I'll upload a short video soon
in the second question, how can we choose n=3 so that it becomes 9 times the ground state energy, the question asked to find the degeneracy of a state whose energy is 3 times of ground which is simply 3E, so the degeneracy is one (1,1,1) correct if am wrong thank you
Sir in the question of the rectangular box for coefficient value of 17 we have possible values for nx and ny are 4 and 1 and we can rearrange them in 2 ways. So the degeneracy for that energy state will be 2.But how can you write that 1.I need explanation. Plz explain sir🙏
Bcoz in rectangular box we were also having different values of lx and ly. Now if you change the values of nx and ny keeping lx and ly same (which is given in the question) then you will not get the required energy. So that rearrangement is possible only if your box is square in 2D or 3D but not for rectangular one.
Sir please help me in solving this question in DL Exam The energy of particle of mass ' m' present in a particular energy level in cubical box of length 'a' cm is 7h^2÷4ma^2 the degeneracy of the level is The answer given is 6 But how to solve this
The energy formula is n^2 h^2 ÷8ma^2 And question gives 7h^2 ÷ 4ma^2 So "n^2" must be equal to 14 to equalize above both equations.. Thus, nx= 1, ny=2, nz=3 Which gives degeneracy 6 ... And that's the answer. Thank you 😊
Nx ,Ny, Nz where we puttiing a numeral no. in x or N ( i know we put in N but my question is that why we r not putting it in x ,y, z) What does orbital degeneracy means???
Nx Ny and Nz are the number of particles along X, Y and Z direction respectively. We cannot give numerals at x, y or z place coz they denote the Axis where the particles are, obviously we have to give values to N as N denotes number of particles
All 'Bout Chemistry Sir it means that if we have ( 1,2,3) ....it means no of particle in x direction or axis is 1, in y its 2 n all ...... One thing more, what we collectively called (1,2,3 ) ....A State of System???
Yes you're right, it means 1 in x, 2 in y, and 3 in z. (1,2,3) will be state and all combination of these three which will have an equivalent energy of (1²+2²+3²)h²/8pi will be system I think. Means the system will include (1,2,3)(2,1,3)(132)(231)(312)(321)
You're welcome 😊 For problem solving there's no particular book as per my knowledge which is totally dedicated to quantum. Bt you can solve previous years problems or u can purchase arihant publication book for NET SLET there are topicwise problems so it will give you some question to practice.
Jyoti Bhatt, as I've already told in that question, that there's only one way of assigning value of nx and ny to get total energy, BcoZ if you interchange the values of nx and ny you'll not get the same energy value. Thus Degeneracy will be one
PANKAJ JANGID, I've made few videos on stereochemistry, and confirmation of cyclobutane, Watch them and I'll make more videos on Organic Chemistry very soon.
If you put 121, you won't get 9h²/8ml² 1²+2²+1²=6 so it's not possible, The Correct answer is option 1 only and total degeneracy will be 3 only. I hope you got it.. 👍
PANKAJ JANGID, I've discussed about organic topics which are easy to score and where probability of doing questions wrong is very less. ruclips.net/video/w9Jt3jbgBYs/видео.html This is link for that video, I'll suggest you to watch it once completely. I hope it'll help you
Sir.... For hydrogen like atom value of Z =1...for the orbital degeneracy it is directly as the square of n.... Although you got a correct answer while using this energy formula...
First qn very nice👍👍
Very helpful.
Sir please make a detailed video on statistical thermodynamics ... ,,, would be happy if you make our concept strong on it.....
Thank you sir for this explanation. ...please upload more videos related to quantum chemistry
Thank you sir for the video 🙏
Awesome explanation sir
Thank you 😊
In Last question if nx=1,ny=2 energy comes out to be =h^2/8m(17/4a^2)
To calculate degeneracy 17 can be arranged in 2 ways 1^2 4^2 &4^2 1^2
Degeneracy come out to be 2 not 1...
I think nx should be equal to 2 and ny =1 ....Then only the degeneracy is 1..
What do you think?
When you have time do reply...Thank you
Organic Chemistry, in order to assign Degeneracy of 17 you've taken nx=1 and ny=4 and you're considering it to come our 17 just by taking numerator in consideration.
But the question is different from usual questions, the box is rectangular, if you our your values of nx and ny in complete formula of energy where denominator is 2a and a then you won't get that value of energy which is given in option.
Just try and check. 👍
Thank u sir understood well
Thank you very much for these videos. It's really interesting videos.. I have learnt alot from these videos. Sir could you please teach some spectroscopic techniques. Like NMR that you have already done. Others like x ray diffraction and others.
In the quest dec 2016, z means atomic number, for one Electron system how Z=5?
Awesome short tricks
Big thanks to you ji for this nicely executed lecture. but plz keep in mind my trans octene R and S query. thaks again
umendra khokhar,
Yes sure...
If I'm not wrong you're talking about R S nomenclature in trans cyclo-octene?
All 'Bout Chemistry yes sir I am asking about trans cyclooctene .I consult many books but not understand clearly. Plz help
OK ill try to explain it asap
I have doubt on last question explain sir 17 is (4^2+1^2)..nx=4,ny=1another possible nx=1,ny=4 so degeneracy is 2 so option also correct ???pls reply sir
When nx=4 it is divided by its own denominator 4a^2..Thus this would be 2/a^2, Not 17/4a^2
Last question was awesome.. nice explanation..
I am thinking that if degeneracy=1 would be given in both option.. then still Option A would be correct answer..
Because energy is lower than other option . So that satisfied 1st excited state.
Please solve question from 2018-2019 on quantum part
Sir last question very Helpful and tricky
Always upload a video some tricky question
very nice video sir ji n please make the video hukel molecular orbital theory n make the secular determinant of cyclo propyne
I'll try 👍
Thank you sir....can you make a video for perturbation theory..
Sure... I'll try for that
Do you have perturbation theory video link. Plz sent it
Sir which material you studied for csir
Super g,thank you
Not considering the electronic spin ,the degeneracy of the second excited state (n=3) of hydrogen atom is 9 then while the degeneracy of second excited state of H^- ion is ?
Sir please help me with the solution of this question 🙏🙏🙏
Thank u sir. Plzz make videos on chemical kinetics
Jamal Adyan, I've made a video on Michaelis Menten equation and Steady State approximation. You can watch that... For chemical kinetics I'll upload a short video soon
Thank you so much. It's very useful
in the second question, how can we choose n=3 so that it becomes 9 times the ground state energy, the question asked to find the degeneracy of a state whose energy is 3 times of ground which is simply 3E, so the degeneracy is one (1,1,1)
correct if am wrong
thank you
Thanks sir
It's a great job for us
Thanks u .. explained well
Plz take some more topics from quantum and thermodynamics
Yes sure... 👍
Waiting for ur new vedio
Please make video on quantum yield and Faraday law.
Thanku so much sir ❤️
Sir plzz Explain ques related orthonormal basis E1 and E2 four marks ques in June 2016 make video
Vv good explanation
Sir in the question of the rectangular box for coefficient value of 17 we have possible values for nx and ny are 4 and 1 and we can rearrange them in 2 ways. So the degeneracy for that energy state will be 2.But how can you write that 1.I need explanation. Plz explain sir🙏
Bcoz in rectangular box we were also having different values of lx and ly. Now if you change the values of nx and ny keeping lx and ly same (which is given in the question) then you will not get the required energy. So that rearrangement is possible only if your box is square in 2D or 3D but not for rectangular one.
Thanku sir.🙏 understood very well.Grateful to you.🙏
@@aishwaryadixit8951 you're most welcome 😊😊
Sir last problem if nx is 1 and ny is 2 means how come it is a2 /4a2
thanku very much
..lts means a lot
Sir I want to know JB hm quantum world k lie Schrodinger wave equation set up krte h to Usme potential energy classical ki kyo put krte h
Sir what is the degeneracy of excited state of nitrogen
Great Sincere efforts.. Can you explain zeeman splitting n its components before gate exam.
Thanks for this video
Great job sir! Very well explained. Please share the link for the ebook of quantum by mc quarrie.
I don't have that book in ebook form
All 'Bout Chemistry it's fine sir.......I have got it.
Please make video on Perturbation theory
Which book is good for qUantum chemistry ?
Please sir make a video on perturbation theory
Sir which material you studied for csir
How does degeneracy become 1 and why for the last question?
please make a video on pericyclic reactions
Yes sure... 👍
Sir please help me in solving this question in DL Exam
The energy of particle of mass ' m' present in a particular energy level in cubical box of length 'a' cm is 7h^2÷4ma^2 the degeneracy of the level is
The answer given is 6
But how to solve this
The energy formula is n^2 h^2 ÷8ma^2
And question gives 7h^2 ÷ 4ma^2
So "n^2" must be equal to 14 to equalize above both equations..
Thus, nx= 1, ny=2, nz=3
Which gives degeneracy 6 ...
And that's the answer.
Thank you 😊
Thank you
Sir, there is a case in hydrogen when degeneracy is 2n2. When is this case applicable?
sir please make the video perturbation method
Nx ,Ny, Nz where we puttiing a numeral no. in x or N ( i know we put in N but my question is that why we r not putting it in x ,y, z)
What does orbital degeneracy means???
Nx Ny and Nz are the number of particles along X, Y and Z direction respectively. We cannot give numerals at x, y or z place coz they denote the Axis where the particles are, obviously we have to give values to N as N denotes number of particles
All 'Bout Chemistry
Sir it means that if we have ( 1,2,3) ....it means no of particle in x direction or axis is 1, in y its 2 n all ......
One thing more, what we collectively called (1,2,3 ) ....A State of System???
Yes you're right, it means 1 in x, 2 in y, and 3 in z.
(1,2,3) will be state and all combination of these three which will have an equivalent energy of (1²+2²+3²)h²/8pi will be system I think.
Means the system will include (1,2,3)(2,1,3)(132)(231)(312)(321)
Thank you very much sir 😊
Will you please suggest a book for quantum only for problem practice .
You're welcome 😊
For problem solving there's no particular book as per my knowledge which is totally dedicated to quantum. Bt you can solve previous years problems or u can purchase arihant publication book for NET SLET there are topicwise problems so it will give you some question to practice.
Thanks a lot sir
I m very great full to u
Plzzz sir upload more videos on expectation value and energy
videos will be uploaded soon,,,
All 'Bout Chemistry thnxx sir n plzz make vdos on Schrodinger wave equation for hydrogenic atom ka...
Mst h
probability of finding particle in box of length L in the region L/4 and 3L/4 for n=1
= 1/2+1/π = 82%
Sir please perturbation theory discussion
alright...
Sir concept of probability kya hota hai?
Dear Sir, can u please solve the ques no. 120 of CSIR DEC-2017 (part-c). ASAP
I have a question
What is the degeneracy of a quantum states with Nx^2+Ny^2+Nz^2 is equals to 6???
Options are
12
24
48
8
Plzzz help?
I guess the options are wrong...
Coz degeneracy becomes 6 when nx=1,ny=2, nz=1
Which gives degeneracy 6
Sir please calculate the degeneracy of excited state of nitrogen..... having electronic configuration 1s²2s²2p²3d¹
Multiply degeneracy of p2 with that of d1 orbital..
i.e. 15 x 10
= 150 is the degeneracy
Sir last wala question samajh me nhi aya why u consider the case 1 not case 2
Sir to get the value as 6 can't we take √2 as nx ny and nz? Then so we will get answer as 6
n is an integer and it could nor be irrational number like root 2
Thank you sr
what if n=7?
Thank you sir
You're welcome 😊
Thank you sir 💐
sir how degeneracy will be one..
Jyoti Bhatt, as I've already told in that question, that there's only one way of assigning value of nx and ny to get total energy,
BcoZ if you interchange the values of nx and ny you'll not get the same energy value. Thus Degeneracy will be one
If nx and ny have same value then what will be degeneracy
If values are same then Degeneracy will be 1
Ok
Sir plz solve QN. 115, june-13(setA).
Sir explain 52,53question of chemical kinetices gate 2011
Why not everybody will understand this..
.
It means you are lagging to make understand
sir plz make a video on organic topics which are important for csir net june 2018
PANKAJ JANGID,
I've made few videos on stereochemistry, and confirmation of cyclobutane,
Watch them and I'll make more videos on Organic Chemistry very soon.
Ok sir.sir plz solve QN.112 june-17(set B).
sir I think the answer of the 2nd qstn is the option 4 i.e.the degeneracy is 4. U told that the answer is option 1..sir kindly check ..Thank you..
You mean that DEC 2015 question? Where I've told degeneracy option 1 that is 3...?
yes sir another arrangement can be 1,2,1.
If you put 121, you won't get 9h²/8ml²
1²+2²+1²=6 so it's not possible,
The Correct answer is option 1 only and total degeneracy will be 3 only.
I hope you got it.. 👍
thank u sir..I got it...
You're welcome brother 👍
ty sir...bt i want to know which topics are important from organic chemistry
PANKAJ JANGID,
I've discussed about organic topics which are easy to score and where probability of doing questions wrong is very less.
ruclips.net/video/w9Jt3jbgBYs/видео.html
This is link for that video, I'll suggest you to watch it once completely. I hope it'll help you
tysm sir.....
You're welcome
Also we know k dono World m partical ka opposite behaviour h
Sir please make a video on basicity of pyrazole and imidazole..
Alright 👍
thnks sir
you're welcome :)
Sir pls ans jruri Dena it is very important for me
👌👌👌👌👌
Degeneracy come out to be 2 not 1...possibilities are (1,2) (2,1)
Degeneracy means same energy different state for (2,1) and (1,2) energies are different. So they are not degenerate
bro use hindi , u wil be quite comfortable in that...
Thanku sir😊
Thank you sir
you're welcome :)
Thank you sir