UV Spectroscopy

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[@Amelia-om7ew]

No one:
Knowbee: Here's some vocab
lol jk this vid was extremely helpful, thank you so much

[@paulabukhalil3880]

One correction: It's all pi-bonding. The pi-system (the double bond(s)) is made up of unhybridized p-orbitals. The unhybridized p-orbitals aren't sigma-bonding. Even your figures show pi-bonds - the vertical arrangement of orbitals side-by-side.

[@fattila62]

Exatly

[@Syllonay]

You explain it so well, thank you !

[@yasirnawaz2927]

Thank you very much sir

[@mohsenshayan9798]

If you are showing molecular orbitals made from side by side overlap of p atomic orbitals, then all the resulted molecular orbitals should be called pi. There shouldn't be any sigma and sigma star in the diagram. This video is graeat, the only mistake is the one that I and others have mentioned in the comments, so please reupload the video.

[@vegotiharshika]

Nice explanation

[@muhammadishaq6647]

Sir, please upload further lectures about uv.

[@kondwanimwafulilwa5521]

Well understood

[@geoseries]

Sir Can You Provide Them in PDF format or in PPT.

[@abdullahsheikh7588]

Why there is no Arabic translationp?

[@ishfaqwani9216]

Sir upload esr and mossbaeur spectroscopy

[@fauntleroycliftonguitar5489]

I'm so glad you posted again. Your explanations are the best!

[@Knowbee]

So glad i could help you. Thank you for your kind words.

[@ilsal4853]

Why you are not uploading any videos about last 4 years ? What happened?

[@kirtichuchra1339]

i must say @knowbee this is wonderful thing that you people are doing to teach all basic things despite being busy in your lives , I appreciate your start up and will continue to learn :)

[@mysteryinchemistry5488]

If atomic orbitals are overlapping laterally then how can you say it as a sigma bonding MO. It should be pi Mo.

[@DD31888]

Got solution to your question ??? I too HV this doubt

[@mikepatnode4407]

😊thank yoooou!❤

[@peternashaat4131]

it might be the best channel ever you can find in TH-cam explaining organic chemistry in a beautiful delicate way

[@lubnawahab]

Sir plz keep doing the great job u do.. I don't know what are the last three vdos u posted... But ur chemistry is best the way u teach is remakable... Truly a gem..

[@rassimsimou1594]

Good

[@alexafromamazon6597]

Thank you! This was incredibly informative. I have to present a paper written by my professor and this made interpreting the UV-VIS data more understandable.

[@Vin_-wg8oy]

you sound like Randall Park.. Louis from Fresh off the Boat

[@nostro1940]

14:22
in 1 trillion years the universe will freeze and this will show up

[@dungdavid380]

I love way you explain the problem, it is extremely clever that help understand knowledge faster. Thank you very much!

[@muhammadijaz6676]

Upload lectures for inorganic chemistry

[@mahmoudtony6905]

Hope you return back to online lectures

[@techtimes1985]

Wow excellent lecture, I'm sharing with my students.... Btw how did you make this video, software etc?

[@Supdada]

Sir will u do video on mossbaeur Spectroscopy and ESR?

[@AmazingLife1482]

Nice

[@radhaagrawal3110]

Plz make some more videos on UV . Your videos are wonderful sir

[@mr.mscnutrition]

Amazing Explaination sir👍🤩

[@fidato795]

God level❤

[@noreedtechno6733]

Plz upload videos on physics too. Your videos are really good . After watching them everything gets clear. 😊

[@beeravelliravikumar]

Great lecture

[@nishaminirathnayake288]

Thanks a lot .Gained so much from your channel.

[@swag_designs5470]

Thanks

[@rubenmontes_]

I think I watched this vid during Organic chem, now I'm re watching it for physical biochem lol

[@TamilTamil-so2ws]

Very nice

[@alirazaaliraza8113]

Sir please help me why benzene show three band in UV visible spectroscopy

[@ryanahmed3892]

How the path length is directly proportional to the absorbence??

[@nok101fc]

Thanks. This video is very helpful to me.

[@Knowbee]

Glad it helped!

[@Iamdebeshbairagi]

Best explanation

[@pharmasolutionpakistan7668]

Ur explanation are good

[@jdcl3446]

Fantastic video, thank you very much!

[@shbiotechnology]

Greetings!
Clear crisp explanation.
On principle of UV spectrometer.

[@curtpiazza1688]

Powerful presentation.....thanx!

[@mustafakhan6701]

sir much much informative video thanks for uploading and make more videos for viewers.

[@cricketjones]

if you click link it goes to spam

[@Knowbee]

I updated the description. You can now contact me.

[@veeru_sagar2471]

It was already there... But anyway one of the best channel I found in TH-cam

[@Knowbee]

Wow. Thank you very much for saying so. A very flattering comment. Hope the videos help.

[@veeru_sagar2471]

I copied all ur words to teach my students

[@Knowbee]

That's awesome. I'm glad you were able to help others!

[@toobaalam2830]

Very nice

[@paramanandsingh7346]

Sir please upload the mass spectrà related problems which come in csir

[@ireneortegaalvarez6043]

very long and he doesn's say new

[@ImtiazAhmed-re8ng]

Come back, teach again

[@sunilmarathe889]

certainly the best channel for organic chemistry

[@khizarhayat1387]

This chanel is one of the best in youtube

[@monke112]

Thanks a lot for your lectures. These are very easy to understand.

[@Warschibarschi]

Great! Thanks!

[@melissajules9670]

the best

[@yoga9455]

What a clarity!!!!

[@jagannathsahu1889]

Beautifully explanation 🤗

[@waleedkhan-nc8en]

Best explanation

[@arupjyotisaikia7749]

Thanks

[@AbdulSamad-sx2pd]

Great

[@seemanaeem8787]

love your channel. Thanks for saving me.

[@emillymasika]

Thank you so much for this elaborate and precise presentation. Am grateful 🙏

[@plamenpenchev262]

6:34 all four orbitals are pi orbitals. Sigma and sigma antibonding orbitals chacterize another bond between carbons and they both have axis of symmetry that is why the are called "sigma".
It is interesting (but rarely done) to regard the symmetry according inversion center if this is S-trans 1,3-butadiene. Then you can illustrate the allowed (between g and u and vise versa) and forbidden (g -> g and u -> u transitions. u = ungerade, g = gerade). I do it for my students.