Matrix Representation of Symmetry Operations | Previous Years Problems Solved on Point Groups

In this video we will try to understand matrix representation of different symmetry operations.
and we will solve previous years problems asked in CSIR Exam.
تمثيل مصفوفة لعملية التناظر
matrična reprezentacija operacije simetrije
maticové znázornění operace symetrie
matrixrepresentatie van symmetriebewerking
matrica reprezento de simetria operacio
représentation matricielle de l'opération de symétrie
Matrixdarstellung der Symmetrieoperation
keʻano o ka hoʻohālikelikeʻana o ka matrix
ייצוג מטריצה של פעולת סימטריה
a szimmetria művelet mátrix ábrázolása
rappresentazione matriciale dell'operazione di simmetria
対称操作の行列表現
대칭 연산의 행렬 표현
نمایش ماتریس عمل تقارن
reprezentacja macierzowa operacji symetrii
representação matricial de operação de simetria
матричное представление операции симметрии
матрична репрезентација операције симетрије
representación matricial de la operación de simetría
การแสดงสมมาตรของเมทริกซ์
simetri işleminin matris gösterimi
Матрична подання операції симетрії
simmetriya ishining matritsaning namoyish etilishi
-biểu diễn ma trận hoạt động đối xứng
מאַטריץ פאַרטרעטונג פון סימעטריע אָפּעראַציע

[@lumaineje]

Watched this in 2021. Thank you for sharing.- Sending love from the Philippines.

[@AllBoutChemistry]

Thank you so much 😊
Lots of love from India

[@celiineho]

Watchinig this in 2019 - super helpful I was so lost in lecture but this clears things up so much! Thanks for posting!

[@jhansi61]

Your approach of teaching through problem solving makes learning really easy. Keep doing what you are doing. Thank you.

[@vishalroy8741]

BH2Cl has C2

[@birendranathbair9913]

Nice video👍👌
The shape of BH2Cl is trigonal planar. So there is a C2 axis of symmetry passing through B-Cl bond.

[@AllBoutChemistry]

yes there will be

[@akshaymandhotra3056]

Why this case is not in NHCl2

[@Билимот]

@@akshaymandhotra3056 NHCl2 is trigonal pyramidal, because of the lone pair in nitrogen atom. So, it is not planar and you can't find a C2 symmetry.

[@akshaymandhotra3056]

@@Билимот thanks

[@dhanyashreek1156]

​@@akshaymandhotra3056 lone pair present in N so it's not have planar structure

[@boopathinice5919]

BH2Cl is the correct Answer

[@pradipmaji9298]

Hi,Bro nice vedio! But the matrix expresssion of Cn and Sn was wrong.. check the sign of sin theta ..I think that's why the last question didn't solved by that matrix...👍

[@oscarabdullai6260]

Please check 27:35 I feel there’s a problem

[@deeptichauhan752]

you can better explain in hindi because your english is not that much good kindly explain in one language which is good for you to explain

[@yogitapurohit9958]

Thank you sir...plz make video on character table and raman active modes

[@AllBoutChemistry]

yes soon I will make a video on that... maybe in two three weeks

[@yogitapurohit9958]

All 'Bout Chemistry ok sir

[@meeraroy9960]

BH2Cl is a planar molecule ..So it pocess C2 axis of symmetry ...

[@mainaliartandculture8405]

Please upload NMR vedio you are doing great jib sir keep it continue

[@AllBoutChemistry]

Alright 👍

[@sachinhasnabade4072]

please Sir make a video of 'tricks of unshifted atom of character table'

[@AllBoutChemistry]

Sachin Hasnabade, watch my previous video, there I've told how to find numbers of unshifted atoms easily.

[@pullaraotirunagari3879]

Sir ......C2X sigma xy lo answer ...once check sir

[@Билимот]

Thank you

[@kiranprabha2524]

Thank you sir...soooo much

[@AllBoutChemistry]

You're welcome 😊

[@SumanSharma-cn6om]

Sir plz solve the question June 2017
The correct relation involving symmetry opretion
I m confused between option 1and4

[@AllBoutChemistry]

correct option will be 4, 2S4 cannot be equal to S2, but 3S6 is equal to S2, this is valid for odd numbers like 3S not for even numbers like 2S

[@SumanSharma-cn6om]

All 'Bout Chemistry thank sir

[@AllBoutChemistry]

You're welcome 😇

[@muddasirahmad]

Nice sir. Your videos are helping. Thank you.

[@AllBoutChemistry]

You're welcome 😇

[@swatitamgadge2184]

Thanku sir pls make video on character table soon

[@AllBoutChemistry]

That will be uploaded soon 👍😊

[@dasojumanisha530]

Thank you sir

[@AllBoutChemistry]

You're welcome 😊

[@kanishkababy6619]

Your method of teaching is so nice thank you for ur simple method

[@alishakakkar6096]

Can u explain ques1 again (not clear through the diagram)

[@Bushra7701]

Very useful ✌

[@AllBoutChemistry]

Thank you 😊

[@sudheer2643]

Thanks a lot sir.nice video and super explanation sir

[@AllBoutChemistry]

Thank you 😊

[@dasojumanisha530]

Thank you so much sir...
Please do series lectures on reagents..

[@AllBoutChemistry]

Alright 👍

[@shivanikumari-vu7cu]

Thank u sir, good explanation..

[@AllBoutChemistry]

You're welcome 😇

[@priyamurugan5014]

thanks for the lecture sir...watching in 2019..very useful

[@thalaajs8067]

Super sir clear understanding...thank u

[@vishalkate2839]

Thank you so much sir

[@SKS-mp4oj]

Thanks sir,
kindly post regular videos sir. your videos are very useful.

[@umendrakhokhar7114]

nice as usual thanks bro.

[@AllBoutChemistry]

Thanks bro 😊

[@phonevox6217]

Thanks you too Much sir

[@supriyabodake4366]

even though u r not getting time den also ur spending time for us...thank u so much u r good teacher......we will wait for next vedio.......

[@AllBoutChemistry]

Thank you for your kind words :)

[@nitinsharma___8436]

Nice

[@AllBoutChemistry]

Thank you 😊

[@neichoihoilhouvum8744]

Thank you so much.

[@AllBoutChemistry]

you're welcome :)

[@KaleemKhan-lq6kf]

Thank you sr

[@AllBoutChemistry]

You're welcome 😇

[@Aartisharma-03]

Thanku so much sir for amazing lecture

[@chemysteryassets]

Very nice video sir

[@AllBoutChemistry]

thank you :)

[@ajoychoudhury8562]

Very nice sir.. Please sir upload more questions and video

[@jharkhand-jobs7]

very helpful

[@AllBoutChemistry]

Thank you 😊

[@jyotishmitasaikia6125]

Sir ... outstanding 🙏

[@tbhavani5349]

Thank you sir. Sir hocl is linear so is it shows c2 symmetry?

[@AllBoutChemistry]

T Bhavani, HOCl is linear but there's no Symmetry elements except a mirror plane, so it will not give C2 Symmetry. Rather it will give only a sigma plane and Point group will be Cs,
I'll suggest you to watch my previous videos on basics of group theory where I've discussed about this molecule and may others.

[@tbhavani5349]

Thank you sir

[@vishalroy8741]

All 'Bout Chemistry sir hocl should have only identity operation I think. Because it is bent like H2O. That means C1

[@AllBoutChemistry]

Vishal Roy, if it is bent, then also you can apply a molecular plane which will bisect whole molecule. Like sigma h plane in H20 which bisect all the atoms.

[@vishalroy8741]

All 'Bout Chemistry oh yes it is still planar :) thank you so much

[@kashminaakhtar4405]

Very helpful video

[@KaleemKhan-lq6kf]

First wala

[@alishanshaikh2429]

1

[@RK-dp1qf]

Thank you 😊

[@AllBoutChemistry]

you're welcome :)

[@sankur2232]

Bh2cl

[@AllBoutChemistry]

good, very well done...

[@ashamalik7057]

Ans is BH2Cl

[@AllBoutChemistry]

very well done ... :)

[@praveen8960]

@@AllBoutChemistry wont be there plane of symmetry in BH2Cl

[@AllBoutChemistry]

Yes there will be a vertical plane in this molecule

[@praveen8960]

Then how come it only c2

[@AllBoutChemistry]

korra praveen, here it's not asked about point group C2. It's just asked that among the given options which is having a C2 Axis of Symmetry that's it. It doesn't asked about plane present or not. Plz read the question again.

[@shubhamjaiswal2282]

BH2Cl

[@mahimahiwal1263]

Sir June 2017 question booklet A question num-110 of symmetry operation plse tell me option 4 is correct

[@AllBoutChemistry]

yes. I've answerd someone in the comments, plz check.

[@sreehariunnikrishnan888]

For Cn rotation, is the sign of sin(@) is interchanged??? 1st raw 2nd sin has - ve charge,
I also saw an another eqn in which second raw 1st sin is - ve....
how it is possibile... is there two type of matrix for cn???