Selection Rules of UV spectroscopy | UV active compounds | Selection rule for electronic transition
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- เผยแพร่เมื่อ 30 ก.ย. 2024
- In this video I (Dr. Anjali Ssaxena) have explained UV active and UV inactive compounds with the selection rule of UV spectroscopy.
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Both are UV active. Thank you mam for this wonderful class.
Most welcome. Kindly Like subscribe and share the videos.
Yea mam both are. Active
nice explaination
ma'am both are active but is n→π* possible in CH₃NO₂?@@chemistrybydr.anjalissaxena
00:01 UV spectroscopy selection rules explained
01:21 Selection rule for electronic transitions in UV spectroscopy
02:47 Selection rules in UV spectroscopy
03:59 UV active compounds are activated by radiation
05:21 Understanding electronic transitions is key to UV activity
07:21 UV active compounds have specific electronic transition selection rules.
09:08 UV active compounds absorb UV light
10:41 UV active compounds undergo electronic transitions
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Both are active..... Thanku mam ... U r the First teacher whoes lecture made spectroscopy easy .... I was messed up by spectroscopy earlier
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@@chemistrybydr.anjalissaxena ok... Mam ...but why didn't u added whole topics ... Like Woodward rules ...nd NMR is also i guess somebit missing
Both CH3COOH, CH3NO2 will be Uv active as both contains N,pie electrons
Yes. Hope you understood well.
Mam bech ke itne sare topics kaha gye auxochrone , absorption and intesity shifts etc
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both are active compound :)
Ma'am can you please explain why n → σ* transition is forbidden
Both are UV active..
Yes👍
In Ch3COOH
Four types of transition possible
S --> s*
π---> π*
n---> s"
n---> π*
But b/c of high energy only sigma to sigma star aur n---> pi star not possible in uv /visible region hence these are uv inactive while remaining both are uv active ...
Overall compound will be considered as uv active....
CH3No2 same as above
Yes
Oh! I wish I had discovered your channel earlier.I am glad i came across your channel. You made it very easy for me.
I don't have enough words to thank you.
God bless you and your family and the people who love and admire you.
Thank you very much.
Welcome! And thx u
mam CH3COOH will be active but why CH3NO2 will be active does pie bond between N and O count as there are no pie bond between carbon and nitrogen
Yes it will be. As pi electron are present
Both are active compound....by the way thanks ma'am...😊
Yes they are. Welcome
how we know they are range of 200-400 nm range ?
Both are uv active because both shows all transition
Yes
Mam both are UV active
Both are uv- active mam....i
Ur video are very helpful to me during my second semester....😊😊😊
Yes. Thx u
Well explained mam❤😊
Homework question solution:
CH3COOH and CH3NO2 both will be U.V active.
Yes, correct
Both acetic acid (CH3COOH) and nitromethane (CH3NO2) are UV-active, meaning they can absorb ultraviolet light. They are also chemically active, undergoing reactions based on their functional groups (acidic for CH3COOH, nitro group for CH3NO2). So there are UV active .
Yes
Today I am watcing Spectroscopy Module .
Tommorow is my exam. I have also subscribed to your channel.❤
Thx u. All the best
Understood ma'am
Both are UV active compounds bcoz both are unsaturated compounds.
Yes. Kindly like, subscribe and share the videos .
Both compounds are UV Activë
Yes.
I need to see the absorbance of dichloromethane by carbon by using uv visible spectrophotometer. I had already run a pure dichloromethane to full range of uv visible spectrum I e,190 nm-1100nm to see at which wavelength its peak is seen .
And,its highest and clear peak have been seen in 208nm. But in literature the range of DCM for uv visible spectrum is 233nm, and highest 274 nm. Somewhere it is written the range is between 200-300nm. And according to 'OECD guidelines for testing of samples' by uv visible spectrum, it's range is 235 nm for dichloromethane. Now I am confused what wavelength range I must fix for my samples. Please guide me.
Great research. You can repeat ur experiment 2/3 time. Or you can give 200-220 nm.
Yes mam both are active compounds b/c pi pi stre and n pi bhi haii
Yes
Mam 28 second pe jo music hai wo bahut mast hai ❤️❤️
Glad you like it
mam agar koi compound unsaturated h aur uske pass non bonding electron bhi h toh woh n to sigma antibonbing bhi toh show kar sakta h
Yes possible he but hoga nhi.
Both are uv active ma'am
Thank you so much
Yes
Thank you ma'am
Welcome
Dono optical active h
Both are uv active ... thank you mam
Yes
1.CH3COOH
Unsaturated +non-bonding e.
n--pie*transition.....UV active.
2.CH3NO2
Same as above.
Yes
@@chemistrybydr.anjalissaxena thanku mam it helped me a lot 😊
@@mahwishiftkhar9348 most welcome
Thanks ❤
Keep watching and sharing the videos
Thank you so so so much ma'am for these amazing lectures...I was very tensed for chemistry...and u taught all the topic with great explanation.
With love and Regards ❤️
Welcome. Keep watching and sharing the videos.
@@chemistrybydr.anjalissaxena ma'am...iss chapter ki PDF notes hai aapke pass?
very nicely explained ,thank u maam
Keep watching
Both are uv active
Thanks mam
Yes they are
Both compound are UV active
Tnx for uploading this amazing lecture 😊
It's my pleasure
Both compounds are UV active🎉
Thank you ma'am❤
👍
Both are uv active compound
yes
Both qns in HW are uv active
👍
Namaskaram Guru Maa
Ur lectures are helping me in my optional Chemistry for CSE.
Thank U so much Mam.
Huge respect from NW Jammu Kashmir
It's my pleasure
Mam nice Explanation
Welcome
Both are uv active compound 1st compund are π-π* unsaturated transition And n-π* transition with unsaturated and no bonding electron
Yes
Both are UV active . Thank you Ma'am ❤️
Yes. Most welcome
@@chemistrybydr.anjalissaxena love you mam , apke ek hi lecture me clear ho gaya .and for you kind information.all my classmate also watch your lectres .and you are popular in my collage.and my seniors suggest your channel.
thanks for this golden contents mam 🥰
Glad you like them!
Both are active nice lecture
Yes, you are right
Acetic acid and nitromethane both are allowed to show transition resulting active uv spectroscopy thank you ma'am.
Yes
CH3COOH is UV active whereas CH3NO2 is also UV active.
Yes
How bro ?? CH3NO2 ?? plz explain a little bit
No2 is unsaturated that's why ?? I m from IT branch so for me it's a little bit tricky 🥲
@@TanmayKaashviVlogs yes NO2 is unsaturated
Easy to understand explanation Mam!!
Keep watching
Both are uv active mam jii
Yes
both are UV-active
Kiya padate ho aap mam .❤❤ Thank you
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Mam both are UV active compounds as both of them have unsaturation as well as presence of heteroatoms
👍
Btech first year student mam tht year the syllabus is reduced.. i m inable to get whts the cutted one , will u help me out mam ?
All topics according to current syllabus are covered in aktu playlists. All playlists are updated according to the current syllabus. So go through playlists
Thanks a lot Mam..how nicely you teach difficult topics..😊
Thanks for liking
Both are UV active
Yes
Thnkyou ao much mam
Most welcome 😊
Very well explained 🤗....now its easy to study
Thanks a lot 😊
Yes ....both are UV active .... Keep on making these lecture .... Thank you so much mam ....
Thank you, I will
Both have UV active
Yes
Both are UV active due to presence of pi bond between Carbon and oxygen, carbon and nitrogen.
Yes
Both are uv active mam
Yes
Good morning mam
Both compounds are UV Active
Yes, correct
both are uv active
yes
both the compound are active because pi electrones as well as non bonding e- present
💯
Excellent explanation of such boring and complex topic
Thx u. like subscribe and share plz
Thankyou maam
Welcome
Thx a lot mam😍
My pleasure
Both the compounds are UV Active because they have non-bonding and pie electrons. Thank you mam for this wonderful explanation.
Yes. Welcome
Great
Thx u so much
Both acetic acid and methyl nitrate are UV active compounds.
Yes
Both are UV Active. As both contains non bonding and pi electron
Yes
Thank you so much mam. Kudos to your efforts!! WATCHING JUST BEFORE MY SEMESTER. Wish I could do this before....
Thank you again mam ❤️
All the best
@@chemistrybydr.anjalissaxena ❤️🙏🏻😇
both compounds are UV active.
Yes
Both of them are UV active compounds....and thank you Ma'am for your lectures
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Both are uv active maam thank for this lecture ❤❤
Most welcome 😊
Thank you so much mam concept is crystal clear🙏
Keep watching
Mam tell me please why sigma to pi * and pi to sigma * is not possible
They are forbidden transition. Actually 6 type hote hein including them but they both does not happen
CH3CHHOH,CH3NO2 are both uv active mam
Yes
NMR spectroscopy ke video ni h man is playlist me
Will try to upload
Both are active...And thank you mam
Most welcome 😊
Both are UV active compound. Tq
Yes, correct
Substitution reaction and nucleophilic and electrophilic sn1 sn2 reaction vala video please create ..
Will try
12:04 ya both are uv active, thanku mam your lectures are awesome and very helpful so much of love to you mam..
👍. Thx u. Like subscribe and share plz
Thanks
Welcome
both are uv active compound . thanku so much mam for this wonderfull class
Yes, correct
Thanku man for this video I completely understand this topic 💯👍
Happy to help
Both are UV active. Thank u mam
Yes they are
Both compound are UV active
Yes
Mam Aapne spectoscopy chapter comeplete kiya huaa hai?????
Yes go through the playlist. Kindly like subscribe and share the videos as much as possible.
Both are active because of unsaturation
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both UV active compounds
Yes
Both are uv active
Yes. Like subscribe and share the videos plz
Both are uv active π to π* & n to π* possibilities
Yes you r right.
Mam meri teacher 6 transition padha rhi hain sigma to pai star aur pai to sigma star bhi to Mai kiski baat maanu???
Ye bhi hote hein, she is right but further she will talk only about only these 4 transition because those 2 are forbidden.
Thanks mam ☺
Most welcome
Ch3CooH- UV Active(contains π & n both π->π* n->π* causes spectrum)
Ch3No2- UV Active
Yes
Dil se maja aa gaya ma'am
Keep watching
Thx mam
Keep watching
Both are uv active. Thanks for the wonderful tutorial .
Yes.Thx u. Kindly like, subscribe and share the videos.