Live Classes, Video Lectures, Test Series, Lecturewise notes, topicwise DPP, dynamic Exercise and much more on Physicswallah App. Download the App from Google Playstore ( bit.ly/2SHIPW6 ) Physicswallah Instagram Handle : instagram.com/physicswallah/ Physicswallah Facebook Page: facebook.com/physicswallah Physicswallah Twitter Account : twitter.com/PhysicswallahAP?s=20 Physicswallah App on Google Play Store : bit.ly/2SHIPW6 Physicswallah Website: physicswallahalakhpandey.com/ LAKSHYA Batch(2020-21) Join the Batch on Physicswallah App bit.ly/2SHIPW6 Registration Open!!!! What will you get in the Lakshya Batch? 1) Complete Class 12th + JEE Mains/ NEET syllabus - Targeting 95% in Board Exams and Selection in JEE MAINS / NEET with a Strong Score under Direct Guidance of Alakh Pandey. 2)Live Classes and recorded Video Lectures (New, different from those on KZbin) 3)PDF Notes of each class. 4)DPP: Daily Practice Problems with each class having 10 questions based on the class of JEE Mains/NEET level. 5)Syllabus Completion by end of January, 2021 with topicwise discussion of Last 10 Years Problems in Boards, JEE Mains/NEET within Lecture. 6)The Complete Course (Video Lectures, PDF Notes, any other Study Material) will be accessible to all the students untill JEE Mains & NEET 2021 (nearly May 2021) 7)In case you missed a live class, you can see its recording. 8)You can view the videos any number of times. 9)Each chapter will be discussed in detail with all concepts and numericals 10)Chapterwise Approach towards JEE Mains/ NEET & Board Exams. ****Test Series for XI & XII**** We provide you the best test series for Class XI,XII, JEE, NEET chapterwise, which will be scheduled for whole year. The test series follows very logical sequence of Basic to Advance questions.& Evaluation of Test and Solution to all the questions at the end of the test. 11 Chap 4 | Chemical Bonding and Molecular Structure 01| Introduction | Cause of Chemical Bonding | kzbin.info/www/bejne/mpKzcpZ8e7h5mrs 11 Chap 4 | Chemical Bonding and Molecular Structure 02 | Ionic Bond | Electrovalent Bond IIT JEE kzbin.info/www/bejne/haLHf42Kfd2Drq8 11 Chap 4 | Chemical Bonding and Molecular Structure 03| Lattice Energy | Born Haber Cycle IIT JEE | kzbin.info/www/bejne/mZmceaKofMaafqc 11 Chap 4 || Chemical Bonding 04 || Fazan's RULE || Covalent Character in Ionic Compounds | kzbin.info/www/bejne/mmTMd5-KbbifrKM 11 Chap 4 || Chemical Bonding 05 || Lewis Dot Structure || How to draw Lewis Dot Structure Of || kzbin.info/www/bejne/bl60pGSjo9R9aK8 11 chap 4 || Chemical Bonding 06 || Valence Bond Theory VBT || Difference between sigma and Pi Bond kzbin.info/www/bejne/bnPCkKt6irCkmK8 11 chap 4 | Chemical Bonding 07 | Pi Bond | P Pi - D Pi | P Pi - P Pi | IIT JEE NEET Pi Bond kzbin.info/www/bejne/f6O7aHSZipVqitE Chemical Bonding 08 | Hybridisation | How to Find Hybridisation | Hybridisation of Atom IIT JEE NEET kzbin.info/www/bejne/d6fLhoiPbd53Zpo 11 Chap 4 | Chemical Bonding 09 | VSEPR theory | Shapes of Molecules | Geometry , Hybridisation ,etc kzbin.info/www/bejne/rmOQn4NtnpuHaZY 11 Chap 4 | Chemical Bonding 10 | Molecular Orbital Theory IIT JEE NEET || MOT Part I Introduction | kzbin.info/www/bejne/ioKomX-OoLOXo9E Class 11 chap 4 | Chemical Bonding 11 || Molecular Orbital Theory IIT JEE NEET || MOT Part II || kzbin.info/www/bejne/jnTafqWki9uGirc Class 11 chap 4 | Chemical Bonding 12 || Dipole Moment IIT JEE NEET || Polar and Non Polar Molecule kzbin.info/www/bejne/anynnJ-ajbmdbNk 11 chap 4 || Chemical Bonding 13 || Bond Angle || Tricks For Bond Angle IIT JEE NEET || BOND ANGLE kzbin.info/www/bejne/d5u6qHuhdtGDidE 11 chap 4 || Chemical Bonding 14 || Dragos Rule || Bond Angle Dragos Rule IIT JEE ADVANCE / NEET kzbin.info/www/bejne/fZeunpqrpr1gaMk 11 chap 4 || Chemical Bonding 15 || Vanderwaal Forces || IIT JEE NEET || London Forces , etc || kzbin.info/www/bejne/bGeXipyZqNSMock 11 chap 4 || Chemical Bonding 16 || Hydrogen Bonding IIT JEE MAINS / NEET || kzbin.info/www/bejne/oWnXiot6gMdlr6c
@keshavkaushik82036 жыл бұрын
Physics Wallah - Alakh Pandey Sir plzz bata do ki dsp3 and sp3d different hote hai kya.....
@quaisarzaman6 жыл бұрын
Sir aap hybrid orbitals banate hue surrounding atom ke hybrid orbital ko to banay hi naii aap to ghalat padha rahe hai but sorry to say aapke bhut se followers hai ghalat concept nai dijiye
@ashishkumar-gb4cl6 жыл бұрын
Quaisar Zaman bhai..sir reply nahi karte😢😥😥😭😭😭
@drstrange42676 жыл бұрын
Ggb sir! 🙏♥️
@drstrange42676 жыл бұрын
Hybridization ko Hwa bna diia ♥️♥️
@izzaakhter17125 жыл бұрын
Can we take a moment to appreciate this man he is sweating bt still is explaining us sincerely
@kindofanmol5 жыл бұрын
@@jakatishabnam6080 stfu boomer it's practically free for us, so yeah massive respect for Alakh Sir.
@gauravnegi43124 жыл бұрын
@@kindofanmol 1 million views around 20k rupees. For 1 topic it's great money.
@wxr29604 жыл бұрын
@@gauravnegi4312 its not about how much he earns, its about how much u pay and how much u understand. Please show some respect.🙂
@navneetrout81934 жыл бұрын
@@gauravnegi4312 and jakati shabnam tum dono ya aye hi kyu ho, tum apne coaching class karne jao na bo free ha. 😂
@gauravnegi43124 жыл бұрын
@@navneetrout8193 Mai coaching ya tuition kabhi nahi gya.
@PhysicsWallah6 жыл бұрын
kuch kuch jagah images timely nahi fit hui. Apology for that. Video kam samajh me aaye to bolna, next VSEPR hai to usme sab fir se repeat ho sakta hai.
@akashP9986 жыл бұрын
Dont worry sir, apke students bhi hoshiyar he 😎
@JakePeraltaaa996 жыл бұрын
Sirrr apki Video jaisi bhi ho Dimag me Fit ho jaati h... Bs video bnate rhoo....Jee Clear hua to pura credit apko hi jayga sir.
@AnkitKumarMishra-rx7gd6 жыл бұрын
Hum abhi itne bade nahi hue sir ki aap humae apology mange.
@AnkitKumarMishra-rx7gd6 жыл бұрын
Mera bhi bro
@JaskaranSingh-rq6cr6 жыл бұрын
🙂koi bat nahi
@thejcarts30353 жыл бұрын
0:40 "HYBRIDIZATION" mein iske bahaar kuchh nahi hai..... ... This gives me too much confidence... TYSM sir 💙
@Zurich1323 жыл бұрын
Bro can you tell how to find hybridization of C2H2 (acetylene) using sir trick Right ans is sp My ans is sp2 Please help
@AmanKumar-nb9gn3 жыл бұрын
@@Zurich132 use structure it is alkene therefore number of sigma bond is 2 w.r.t any carbon and 0 lone pair therefore Z is 2
@achintyasrivastawa99093 жыл бұрын
@@Zurich132 yes u r right the answer is sp3 only
@ayeshamoeen64323 жыл бұрын
@@Zurich132 look at how many atoms are bonded to a single C. In acetylene its 2 atoms ( hydrogen and the other carbon ) therefore sp hybridization is the answer.
@prachi_c093 жыл бұрын
What does "Translate to English (UK)" mean?
@Mintu_x2 ай бұрын
Two Things never come back 😢 1) Dinosaur era 😈 2) Alakh sir white board era 🐐
@AtharvPareek-w1e2 ай бұрын
Aur tu bhangi gawar hi rahega lmfao
@arizahmad67432 ай бұрын
English era too, u spelled dinosaur incorrectly buddy
@Anonymous69.692 ай бұрын
Edits ke lines churata hai
@lester9143Ай бұрын
@@Anonymous69.69 yt shorts wala hai
@anushkamund745Ай бұрын
@@lester9143 BELUGA???
@madhubalagupta5064 жыл бұрын
Guys have you ever noticed he has never asked for likes and subscription unlike other KZbin channels...he is here only to teach. hats off to his dedication 👏
@daredevil58214 жыл бұрын
Hmmm mate
@madhusmitasahu-14284 жыл бұрын
It's so true
@arindamsaha30954 жыл бұрын
Alok sir🤟🤟🤟🤟
@arunapareek87514 жыл бұрын
Its true but shobit nirwan also does ask for like or subs.
@rishabhraj96734 жыл бұрын
@@arindamsaha3095 CHILLA chilla kar sbko scheme bata de
@DaDa-yd1pz4 жыл бұрын
he is sweating and teaching then also maybe isliye taki fan ki avaj naa aaye. Salute for such a teacher........🤩🤩🤩🤩🤩
@hiteshyadav19134 жыл бұрын
Dhyan se dekho board pr right hand side uupr ... Fan ki parchai aarhi hai
@shinchan46564 жыл бұрын
@@hiteshyadav1913 bhai wo fan nhi bulb hai Jiski parchai whiteboard hilane se hil rhi hai
@hiteshyadav19134 жыл бұрын
@@shinchan4656bhai... You maybe rt in your opinion but I think.... Agr hm dekhenge toh vha pr fan ki ghumte hue ka reflection aa rha hai.... Anyways.... Reflection ko maro goli...hmne toh bss phadna hai aur aage bhadna hai...😊👍
@shinchan46564 жыл бұрын
@@hiteshyadav1913 hm sir ke jaise 😊
@vansh98523 жыл бұрын
Ac be chal ra ha
@nishantkumar48504 жыл бұрын
He started the lecture saying everything would be cover here....i felt too much satisfaction and started with full confidence.🙂..
@mramzaneducationalpoint19214 жыл бұрын
watch this alos kzbin.info/www/bejne/pJKkYqKwaL6cma8
@princymalhotra34343 жыл бұрын
kzbin.info/www/bejne/eWqVpWl5j56ZmNU
@atharvaambekar69193 жыл бұрын
@@mramzaneducationalpoint1921 "alos " really🤷
@carguy74804 жыл бұрын
Timestamps: 1:52 VBT of CH4 6:00 Hybridisation 12:00 Hybridisation geometry 12:35 HYD 1 13:38 HYD 1 definition 14:20 HYD 2 15:40 HYD 3 17:00 HYD 4 18:10 HYD 5 20:35 HYD 6 22:25 HYD 7 23:45 types of hybridisation 37:34 summary diagram 39:00 Hybridisation method 1 53:00 Hybridisation method 2
@andytandy4224 жыл бұрын
Thanks
@sanitachauhan94804 жыл бұрын
Thanks
@aryanmishra86414 жыл бұрын
Thanks buddy
@nirmalajha60984 жыл бұрын
Wah
@vrundapimple38624 жыл бұрын
Ty
@ghanshyambairwa61615 жыл бұрын
35:49 pasine aa rahe hai sir ke..😔 Kitne mehnat karte hai sir Apne liye Like toh banta hai😁😁!!
@shivanipaharwa10625 жыл бұрын
sir apne liye nahi karte baccho ke liye karte hai....samjhe!!!!!!!!
@manoj76005 жыл бұрын
Apne ka matlab students ke liye , hamare liye .
@gauravdubey1575 жыл бұрын
@@shivanipaharwa1062 arre uska APNE se matlab tha ki hamare liye kitni mehnat krte h😅😂
@greenbandage62065 жыл бұрын
@@itsaclickbait4592 sahi kaha ye log jyada emotional ho gye
@himanshubhatt79675 жыл бұрын
@being gamer agar itne paise Kama rahe hote na to fan off karke video record na karte balki ac lagva lete. Bolna bohot Asan hai kuch logo ke ghar kharch kamai se bhi jyada hote hai
@mahnoorkhan86293 жыл бұрын
For the first time I watched his lecture and now I know why people love his method and appreciate his efforts .
@SubhashreePanda-k7y7 ай бұрын
Physicswallah is old But it's education is gold
@iftikaralambarlaskar26754 жыл бұрын
I cant understand how the people can dislike such type of lectures where there is explanation of each and every concept from the heart...I know every student has a right to like or dislike the video but disliking these type of videos is completely odd......moreover many students are getting the help mainly poor students belonging from economically weak family are learning in free and getting the track to fulfill the dreams..Hamesha dua hai mera sir ke liye...May God bless with eternal joy and happiness ...live a long happy life......... ALAKH SIR is the first teracher in KZbin who never told the student for like and subscribe.........In future definately I will meet You
@nitinsandhu11054 жыл бұрын
Right bro I am also confused
@niharikakashyap73504 жыл бұрын
Yeah
@thefang694 жыл бұрын
BCOS they are assholes from Akash , FIITJEE ETC
@nareshsalaria50354 жыл бұрын
They are the other coaching teachers and students who had paid for online courses🤣🤣🤣
@iftikaralambarlaskar26754 жыл бұрын
@@nareshsalaria5035 nothing but jealousy
@bhavyasaraswat72853 жыл бұрын
youtube should give him a best teacher award at youtube . This is very good honour for alakh sir as well as for us. Who is satisfied with this ? Hit like
@bhabenroy42753 жыл бұрын
mee
@shashankraj97243 жыл бұрын
@@bhabenroy4275 I too agree
@sayantande28563 жыл бұрын
@@shashankraj9724:-)
@pravatiswain48613 жыл бұрын
Me
@gourikakati77083 жыл бұрын
Most influential person
@SajanKumar-uu3vu4 жыл бұрын
It's such an irony sir,that u don't ask for likes and subscription a single time and still Physics wallaah continues to be the most visited, most liked,most subscribed .. And above all, the most beloved KZbin channel for all students! 💜 आपको कोटि कोटि नमन है सर !🙏
@Kirandhillon-lp5gz6 ай бұрын
Old videos are 1000% batter than new 😢
@hiddenxhacker86453 ай бұрын
Batter😂😂😂
@Kirandhillon-lp5gz3 ай бұрын
@@hiddenxhacker8645 ye spelling mistake isi liya kiya thaa ki kon dyan sa dekh rha hh
@nayanamodh2 жыл бұрын
The study of each student in india studying 11th -12th is incomplete without Physics Wallah ❤️❤️
@believemebuddy49342 жыл бұрын
@@Hassan-ey2cr no love pk
@vanith72 жыл бұрын
Im in 7th 🤫☠️
@vanith72 жыл бұрын
Studying Olympiad*😵💫
@believemebuddy49342 жыл бұрын
@@vanith7 keep my land
@vanith72 жыл бұрын
@@believemebuddy4934 ohk!
@anchityaturkar12113 жыл бұрын
These lectures shooted in low light makes our future bright Agree or not 👍🏻👍🏻👍🏻
@aryakirme92632 жыл бұрын
I agree 🙂
@muntazirmehdi8192 жыл бұрын
I agree 💯💯💯💯
@purpleocean11692 жыл бұрын
Agree 😊
@luggesh4456 Жыл бұрын
agreed
@Nktips-pv4gg4 ай бұрын
Totally agree after 5 years these lectures are far better than today's lecture on physics wallah♥️
@andromedancomplex36893 жыл бұрын
We can see sweat on his body which represents his struggle and I am proud to be a student of him. He deserves standing ovation. A lot of love from us to The Physics Wallah.
@prachisinha24 Жыл бұрын
The best video of hybridization. Last few minutes were like brahmastra to find hybridization. Hats off!!
@jatinsihag-ec5sp4 ай бұрын
amazing reply❤
@TrishaDatta-vj4hq3 ай бұрын
bangali ho?
@jatinsihag-ec5sp3 ай бұрын
@@TrishaDatta-vj4hq kon
@TrishaDatta-vj4hq3 ай бұрын
@@jatinsihag-ec5sp prachi ko pucha
@jatinsihag-ec5sp3 ай бұрын
@@TrishaDatta-vj4hq ok yrr
@gamingfire99053 жыл бұрын
Theory of hybridization 13:34 Types of hybridization 23:48 How to find hybridization 38:19 Super trick 52:19
@armybts8373 жыл бұрын
Thank u
@ayushibhumi56003 жыл бұрын
Super trick at52:39
@Karan-un4bd3 жыл бұрын
Do u play ff
@shauryaverma27053 жыл бұрын
Thanks
@avneetsinghsodhi23633 жыл бұрын
@@Karan-un4bd I play free fire
@pareshancheems93073 жыл бұрын
It has been just 2 years , and now this man is teaching us with high quality edited videos, smart board , animations. SAMAY KA CHAKRA BADA BALWAAN HOTA HAI 🔥🔥
@veda61013 жыл бұрын
Yeh unki mehnat ka phal hai...
@nikkk25103 жыл бұрын
@@veda6101 sahi kaha bro puri mehnat and dedication hai
@yaseerbeig13563 жыл бұрын
Unki Mehnat hai wo
@pwguide7.5kviews893 жыл бұрын
Alakh sir doing had work
@akshitjamwal65082 жыл бұрын
Yems vmro 👌
@protrainers60853 жыл бұрын
YOU TUBE IS SO LUCKY HAVING A LEGENDARY TEACHER OF PHYSICS AND CHEMISTRY ( THE PHYSICS WALLAH )
@luckykalsada811210 ай бұрын
Sir you are the best teacher no one can beat your teaching skills. You are the legend teacher. Who agree.........
@NehaSharma-eo9lc5 жыл бұрын
You make everything simpler and interesting!💙🇮🇳🌈👍🏻 Government especially the education minister should recognise this channel and honour our favourite Alakh sir with awards! 🏆💯💙🌈💖🇮🇳♥️🍃🌙☀️ Because this is called ni-swaarth prem, apne desh ke liye aur future ke liye! Thank you is just a word for all this.🙏🏻☀️
@elianakaur41885 жыл бұрын
Of course ❤❤🙂🙂🙂🌷🇮🇳🇮🇳🇮🇳🇮🇳
@arijitmohan39765 жыл бұрын
correct
@pratibhabhaskar36565 жыл бұрын
Exactly yrr..
@shrustikamble7665 жыл бұрын
Exactly
@ankurkhare11275 жыл бұрын
Correct
@pushkarpandey0103 жыл бұрын
Chemistry is the only subject when you study a theory completely at last you will get to know that everything was lie 😂😂😆😂
@KK-95463 жыл бұрын
Waqt Badal jaata hai....jasbaat badal jaate hain 🤭😜😅
@gouravp.38513 жыл бұрын
Chemistry is all imaginary..
@snehadhillon95973 жыл бұрын
Really 😨😂😂😂😂😂😂😂😂
@KK-95463 жыл бұрын
@@snehadhillon9597 yss🤒😜
@Yogeshsharma-xq2yq3 жыл бұрын
Bahut sahi bola
@vanshchauhan62713 жыл бұрын
I do not think a new version video of these topics are required these videos are just fabulous and everything is covered.... It is helping me to cover my backlog😭
@ayesha-vw3tc2 жыл бұрын
Geomatry ka kese pata chala?? Ke trigonal aae ga ya tetra ???
@vanshchauhan62712 жыл бұрын
@@ayesha-vw3tc dekh agr sp² h to trigonal and agr sp³ h to hedra
@vanshchauhan62712 жыл бұрын
@@ayesha-vw3tc suru me dekh ke kr fir practice karegi or yaad karegi to aa jaega 😌
@ajaypanwar45772 жыл бұрын
Last wale formula se C2H6 me carbon ka hybridization kese niklega, koi idea?
@courageunlimited33272 жыл бұрын
@@ajaypanwar4577 bhai iski hm structure wise karnegey ... Structure ke through carbon ke 4 Sigma bonds aaengey or is liye uski hybrid.... SP3 hogi
@divyanshu_1209Ай бұрын
Sir Teaching method is much better than any Yakeen and Lakshya batch Teachers . Thank you so much Sirr .. ❤
@divyanshu_1209Ай бұрын
Yes .
@VinitKumar-tt6up4 жыл бұрын
I will suggest my school chemistry teacher to watch the videos of this legend before teaching us in class❣️
@shahilyadav4534 жыл бұрын
🤣LoL!
@rainadewangan88774 жыл бұрын
@Vinit Kumar Yes but even then no one will b able to teach the way he does
@shikhagupta61144 жыл бұрын
Vinit ....r u from N e techno ?
@floorgang054 жыл бұрын
Yes bro but still you should respect every teacher.
@narashnath43704 жыл бұрын
correct point
@monalikadoda22324 жыл бұрын
finding a teacher who's better than alakh sir is just like catching don.... IMPOSSIBLE lots of love and respect
@lakshay39814 жыл бұрын
Yeah 😎
@ehtramali17674 жыл бұрын
Dr. Sarvepalli Radhakrishnan from heaven: Am I joke to you
@xkai2523 жыл бұрын
Yeah
@FitWitScience2 жыл бұрын
@@ehtramali1767 U can't find him bro He's no more
@vipinjain74963 жыл бұрын
During this pandemic, I have learned so much from you. The way you teach everything straight away hits the brain. Thank you. This is all I can say. I am thankful to be learning from you.
@anushamahajan Жыл бұрын
There can never be no other video better than this about HYBRIDISATION on KZbin 🙏🏼❤️!!
@PranayRajpurohit-iv8bb Жыл бұрын
Really yrr know in 2023 I watch only pw old videos. It's better then pw app
@battlegrounds311011 ай бұрын
@@PranayRajpurohit-iv8bbare you in 11th ?
@mohsinjandahri270211 ай бұрын
@@battlegrounds3110 hello bro yaar ek inquiry thi puchna yaar ye jo sir ne formula diya hai supertrick se please tum C in c2h2 ka hybridization dhoondke deskte ho mene bht koshish ki pr nhi horaha
@shubhaadhikary424910 ай бұрын
😂 pagal ho kya formula kya likha h dekh nhi skta Outermost electron of central atom Diya hua a so c2h2 mtlb alkyne me kha se central arom ayga wo to aliphatic chain me h uska hybridization sp hoga aage org me samjhoge (one tip give sugma bond as sp3, double bibg as sp2 and triple bond as sp)@@mohsinjandahri2702
@CherizWorld4 жыл бұрын
Guys, the BeF2 example literally made me look at chemistry from different perspective! Like why does BeF2 have linear geometry? Because it has 2 sp hybridised orbitals which are formed because originally Be had paired electrons and so it can't form bonds with Fluorine (VBT!!!!) This opened up my eyes ... Throughout 11th and 12th I never understood this concept let alone try to. All I did was mug up structures.( Cuz that's what we were taught at school anyways!) But this great person he made it so simple that even my 8th grader sister could understand this!!! 😶😶😶😶😶😶💟💟💟💟💟 Super respect and super stoked!!! 🌟🌟🌟🌟
@anuradhakulkarni73904 жыл бұрын
@@spacewalker207 aww I wish I could read this chat, lmao, my curiosity can't contain itself
@spacewalker2074 жыл бұрын
@@CherizWorld well not a problem...i like to read big stuff....😁
@CherizWorld4 жыл бұрын
@@spacewalker207 😅 that's settled then I guess 😂
@aryanarora50624 жыл бұрын
@UCztoeJTiLyTRXcyxJZ76G-g Now i'm also curious, what happend here!?
@lifestough25464 жыл бұрын
If u love Sir, hit a like.....U r the GOC sir....❤️❤️ Thought u to b the best , but u r not...
@sonukumar-nf4hb4 жыл бұрын
well basically sir is god of physics and chemistry
@athaaltaf70533 жыл бұрын
42:08 no-one talked about this but only physics walla sir showed double bonded molecules 🥺👏. So greatful
@mohitretwal69197 ай бұрын
This man changes it completeeee life.....
@puneetpandey1375 жыл бұрын
In the era, where coaching is business, teachers like u are blessing.. #jeetu_bhaiya bhi aap. #supe30 k Hrithik roshan bhi aap. 😇😁
@ADITYASINGH-yc6du4 жыл бұрын
Bhai Anand Kumar ka comparison kisi se mat kar
@anwarshehzad7864 жыл бұрын
kzbin.info/www/bejne/aIOnfXSlh5yneJo / How to balance redox chemical reactions / balance oxidation and reduction reactions.
@asheeshkumar88254 жыл бұрын
Bro ye galat bat hai kisi ke bare Mai aisa bolna kha tak uchit hai
@NINJA-yz7xz4 жыл бұрын
@@ADITYASINGH-yc6du are bhai tum kyo uchal rahe ho
@RubySingh-dt6ns3 жыл бұрын
52:45 - super trick to find hybridisation
@Akshit-te7gx3 жыл бұрын
Thanks
@azharalykhan55433 жыл бұрын
Noice👍
@SilverGate0073 жыл бұрын
@@azharalykhan5543 🥄
@aniketsharma52903 жыл бұрын
@@azharalykhan5543 noice English 😂
@azharalykhan55433 жыл бұрын
@@aniketsharma5290 sorry english doesn't come to me🥴
@monusonu-c7m4 күн бұрын
From "Hello baccho" to "All the very best",Sir you are just simply awesome
@laxmimondal14894 жыл бұрын
This type of tricks always make you the most wanted online teacher😅
@vedant80024 жыл бұрын
Bruh 😒😒🤫 It's given in every fucking jee preparation book
@harshchakraborty374 жыл бұрын
Ya
@laxmimondal14894 жыл бұрын
@@vedant8002 u may be a topper bro .. but I am below average .. I even don't open my book all knowledge I am getting is from him only..... 😔
@222allmywishescometrue4 жыл бұрын
Can someone tell me that if Cl is the central atom then do we count it as monovalent (in the formula given by sir at last) Or not? I'm struggling with this thing😭
@yaseerbeig13563 жыл бұрын
@@222allmywishescometrue what's the compound bro
@attitudearyanahirahir43155 жыл бұрын
THIS IS VERY BIG THING....TO SHARE KNOWLEDGE. NOWDAYS. ...MAY GOD BLESS YOU SIR WHATEVER YOU WANT
@pravinks77154 жыл бұрын
Concept me jaan daal deta hai ye banda BHARAT RATNA dilaao is chacha ko😍 it so farso good at
@-HITMAN-454 жыл бұрын
Even he teaches in hindi , It is very easy to understand his teaching. Instead of joining IIT courses , We can join his class. Hats off to him
@-HITMAN-454 жыл бұрын
No
@-HITMAN-454 жыл бұрын
I am from Tirunelveli
@-HITMAN-454 жыл бұрын
PVM school
@-HITMAN-454 жыл бұрын
Who r u? Y r u using bad words ? and teasing me
@shivanandnula66095 жыл бұрын
This is somehow better than BYJU'S.......Loved it ❤☺
@pirthvilohana60265 жыл бұрын
yess it is much better then byjus
@Dhirash_irom5 жыл бұрын
YeaH ItZ far far better 🌈
@YogendraSingh-mv1lp5 жыл бұрын
Yessssss
@MamtaDevi-my6ep5 жыл бұрын
Yes it is very much better
@arjittyagi72135 жыл бұрын
Shivanand Nula Aap ki baat ne mera dil chooo diya ! Same here
@sritha28774 жыл бұрын
We can understand his dedication towards teaching the subject by 1)the way he teach us 2)the tattoos
@BEHAPPY-ij5cl3 жыл бұрын
hi
@Vipinyadavyadavjiji3 жыл бұрын
Hello baby
@FitWitScience2 жыл бұрын
@@Vipinyadavyadavjiji Nikal
@zarazulfiqar83735 ай бұрын
Our study is incomplete without Physics Wallah. Thank you so much Alakh Sir ❤
@jineshjinesh1214 Жыл бұрын
I never thought i can be good at chemistry but after attending sirs classes i am proud of my self
@samitsikdar498 Жыл бұрын
yes he is a great teacher
@besmart85 Жыл бұрын
What will be the value of Z for C in ethyne, as per super trick?
@InumarthyJithendraNagaSai Жыл бұрын
Bro pls help it is not working for c2h2😢😢😢😢
@sweetymath Жыл бұрын
@@InumarthyJithendraNagaSai aise kaise
@cholgaming5600 Жыл бұрын
@@sweetymath ?
@OmPrakashSingh-zh2kx5 жыл бұрын
Sir u must be awarded with Nobel prize...🔥🔥🔥
@jennie7375 жыл бұрын
Right...... ✔
@mustafakhan67015 жыл бұрын
Exactly
@AmanRaj-tv3tz4 жыл бұрын
I also agree with you👍🤟
@nigarbano60964 жыл бұрын
Yes🤘
@anitaprajapati63844 жыл бұрын
Agreed
@avnishkumarmishra21744 жыл бұрын
I have never seen a teacher like u! Hats off to u!❤️❤️❤️
@kanchangaira14903 жыл бұрын
Right...me to
@SafaNoorain-q6k3 ай бұрын
1 hr ago i was confused abt this concept and now i am literally liking it .....Ty so much Sir
@mansisharma62335 жыл бұрын
Mansi here.. Sir aap ko noble prize se nawaza jana chahiye kyonki.. Jab apne hmare jaise bachon ko hybridization samaja diya.... 10x sir 🙏🙏🙏🙏😊😊😊
@DhananjaySingh-px9fc4 жыл бұрын
Aur tumhe kisi khadi cheez se nawaza jana chahiye😍
@anishathorat66764 жыл бұрын
Thank you sir!
@Manas22224 жыл бұрын
Do you even have any idea of what nobel prize is given for?
@vikaskumarsingh81134 жыл бұрын
Y
@utkarshsrivastava87984 жыл бұрын
Best Lecture on Hybridisation Ever seen. Hit Like if you agree.
@anteater94084 жыл бұрын
No
@mrinmoysen38604 жыл бұрын
@@anteater9408 lol
@harshit39644 жыл бұрын
@@anteater9408 send me the link of best video then !
@anteater94084 жыл бұрын
@@harshit3964 ever heard of organic chemistry tutor?
@harshit39644 жыл бұрын
@@anteater9408 no.. Send link
@palakscreation3 жыл бұрын
Students learning from "physics wallah" are so Lucky to have a teacher like him.....salute to the world's best teacher alakh sir😊
@quantummechanics68033 жыл бұрын
Abhi bhi bolo ki braham tum par atyachar kar raha ... Ye bhi ek brahman hi hai...
@rekhakumari-kr9qg2 жыл бұрын
Uska thepa dekh kar aaya hai kya
@Radhe8107 күн бұрын
Mene bahut video dekhe...lekin aapne ne bahut acha samjhaya You covered everything in this video
@sanayadehwal55276 жыл бұрын
😭😭😭😭😭😭 I am crying! Aap kaise hain itne acche sir! You are the best person alive!
@rajkamalgogoi7385 жыл бұрын
rote kaahe ho enjoy karo lecture ..
@hwinter33475 жыл бұрын
There are some great teachers like namo kaul, pulkit jain. It is genetic. It is in their blood to teach so good it seems
@akanksha52615 жыл бұрын
Absolutely Sanaya
@waqqasElahismch5 жыл бұрын
Actually you did meet great teacher
@vamsiwhat38625 жыл бұрын
May be u forgot about me
@swarnabhoomidainik93825 жыл бұрын
Let's pray sir gets Dronacharya Award.❤🙏🏻
@malabikaroy31764 жыл бұрын
Nahi dronacharya was not good he was the one who has disabled Ekalavya but sir teaches everyone with out any racial or caste discrimination in his heart
@chris_brown4 жыл бұрын
@@malabikaroy3176 @savage reply boi
@prithvirajpawar55064 жыл бұрын
Not edited Properly but good content
@rohits46634 жыл бұрын
@vishal Agnihotri good bro
@navinkumar9534 жыл бұрын
Yes he took burden of million of children
@arnavshah89283 жыл бұрын
if every teacher was like you, the world would change completely. hats off sir!
@FreeFire-em1rz Жыл бұрын
If every student like you same change will happen
@khushikumari-xr9ui Жыл бұрын
Now this happened
@Doraemon__5639 ай бұрын
You are the best sir!!!💗 I have watched your all videos of chemical bonding...✨ MY CONCEPT IS JUST CRYSTAL CLEAR 💕💥 thnkeww so much sir for your hardwork you are doing for us!!🤍🤍 Hatss off to you sir!!!✨✨
@diknickdhanawade20954 жыл бұрын
50 percent of my first salary I Am going to donate u as a gesture from me . God bless u u are great
@yashhhhjjj4 жыл бұрын
How much ₹5900 or ₹ 6000 🤣🤣🤣 . Btw just joking
@thankyounext49624 жыл бұрын
@@yashhhhjjj that's a really bad joke btw
@saikatmukhopadhyay18614 жыл бұрын
@@thankyounext4962 It Was Quite Funny
@yuvrajmondal63433 жыл бұрын
He is the only guy who never asks for likes and subscribers. He only clears all the concept and queries of us. Hats off to you sir
@madridista86174 жыл бұрын
Sir apke yahan Pakistan me b bahut students hain I m one of them Respect 😊 Love❤️
@adityaxplosive50414 жыл бұрын
Amazing bro
@MN-gk8cj4 жыл бұрын
Wow
@MN-gk8cj4 жыл бұрын
So wonderful to hear that 😀😄
@madridista86174 жыл бұрын
@@MN-gk8cj yeah bro we love him ❤️
@madridista86174 жыл бұрын
@@MN-gk8cj pehle jab mene Alakh Sir k lectures dekain tu me jab college gaya tu sab se kehny laga k yaar Kia hi best teacher hai physics ka utube pe Tu sab logh kehny lagy k Sir Alakh Me bahut heraan hogaya k ye tu sab jantey hain Alakh Sir ko
@HahaComments-k7e8 ай бұрын
Salute to u sir ki aapne itni aasani se apne short trick se samjha diya mai to pareshan ho gya tha hybridization ko leke... Bahut videos dekha lekin kuch samjh nhi aaya lekin aapne ekdam clear kar diya.... Thanku sir thanku so much sir❤❤
@shirishb72263 жыл бұрын
We live in a society where every KZbinr first ask us to subscribe his channel, This legend ended video without talking abt it. ❤️❤️
@80sSultanyt2 жыл бұрын
Point to be noted
@sudikshyamahapatra51192 жыл бұрын
@@80sSultanyt yes
@TanmayPRIME Жыл бұрын
Zack Snyder's Joker 🃏?
@b43_pranjalvyas765 жыл бұрын
Congratulations for 1 M subscribers!!!!!!!!!!💐💐💐💐
@kartiksangwan75215 жыл бұрын
I think he should not do overacting
@malabikaroy31764 жыл бұрын
He has got.2.2 M
@dr_ryzpect35664 жыл бұрын
He has 3m now
@aaditya.iiitnr02044 жыл бұрын
Now road to 4m
@EklavyaJain Жыл бұрын
Now crossed 10 M check it!!
@anikethjana4163 жыл бұрын
10:37 i can hear a phone ringing (imagine) - you are been selected for the nobel prize as the best teacher in the world.
@thelegendsofbaihatacharial82223 жыл бұрын
Teaching me nobel Prize nahi hota
@lorentz16173 жыл бұрын
@@thelegendsofbaihatacharial8222 hey man it's a joke can't you realise 😄
@thelegendsofbaihatacharial82223 жыл бұрын
@@lorentz1617 pata hai bhai. Bas aise hi keh raha tha
@thelegendsofbaihatacharial82223 жыл бұрын
@Cocomelon - Nursery Rhymes 2 12th
@sheksahabuddeen26943 ай бұрын
pure internet me to kya kahi nhi hoga sir aap duniya ke best techer ho tjankyou sir
@Cupids_inl0ve9634 жыл бұрын
I m speechless after watching this video......seriously very much impressed by ur knowledge sir............how many of u agree this
@SS-oo8sj4 жыл бұрын
I don't agree
@SS-oo8sj4 жыл бұрын
He doesn't know teaching
@Cupids_inl0ve9634 жыл бұрын
Why u think so ...... although he is a excellent teacher
@ajupawar41654 жыл бұрын
Love you poonam
@awakenonline50984 жыл бұрын
I agree
@anitapandit73705 жыл бұрын
Teacher : Explain Hybridisation Alakh sir students : Ma'am ek magad ka ladoo lo aur teen motichur ke aur mix kar lo.......... : ) : ) : D Btw video was excellent THANK YOU SIR
@arjittyagi72135 жыл бұрын
Anita Pandit Hahahaa
@RomanReing-fd6mc5 жыл бұрын
😂😂😂
@SarfarajAlam-oz8vb5 жыл бұрын
Sahi kha
@anitapandit73705 жыл бұрын
@@arjittyagi7213 🤣🤣🤣
@anwarshehzad7864 жыл бұрын
kzbin.info/www/bejne/aIOnfXSlh5yneJo / How to balance redox chemical reactions / balance oxidation and reduction reactions.
@vipinjoshi66916 жыл бұрын
Sir chemistry pdte pdte kaafi time ho gya lekin Jo concepts aap btate ho kisine nhi btaaye ... thanks alot sir. God bless you...we are lucky to have you sir
@Shivanshyaduvansi8 Жыл бұрын
Thanks sir for amazing lecture itne aache se toh koi paid batch v nahi padhata ........ thanks a lot❤❤
@cuteprincess52883 жыл бұрын
Everybody is talking about how he's sweating and all...but no body is talking about...that...geeeezzz....it's actually the best video of hybridization ever....I mean am crying as hell bcz mujhe pehli baar ye topic smjh aa gaya...and m soo confident...like ...laao koi bhi compound do and I'll tell u the structure.... he's the god of this education field🙏🙏🙏🙏
@rahulnick36133 жыл бұрын
Btao yar ClO2 & NO2 ka last trick se kaise bnega fir...?
@cuteprincess52883 жыл бұрын
@@rahulnick3613 dude be logical bcz if ur a neet aspirant then I can bet u that u'll never get a question in which they'll ask u this.... they'll always ask u the structure of chlorite ion and nitrite ion.. !!!!
@redxstargaming66893 жыл бұрын
@@cuteprincess5288 Tell his problem's Solution..
@rishab_rdg3 жыл бұрын
@@rahulnick3613 bhai isme decimal banta he toh fir kese karege
@rahulnick36133 жыл бұрын
@Towering Master 😁😁😁
@navidiqbal51524 жыл бұрын
When I saw the time of lecture 1hour my expression 😣😣😣but when I started and completed it my expression 🤓🤓🤓it was so easy. Honestly sir it is only coz of u Thanks make me able to understand Thank you ☺️☺️☺️☺️
@jimhalpert98034 жыл бұрын
One organic chemistry lecture is 2.5 hours in class 12th. Good luck.
@neutron4174 жыл бұрын
@@jimhalpert9803 And One of *ALMOST 3 HOURS* Of Hydrocarbons playlist( *CLASS 11* )
@geenishaa31534 жыл бұрын
True bro he's a gem😇😇😇❤️❤️
@ammarfarooqui83312 жыл бұрын
Even when there are many other amazing teachers out there, the ultimate satisfaction is after watching alakh sir's lectures. Hats off to this Legend ❤️
@Mohammad272122 ай бұрын
suna tha OLD IS GOLD ajj dekh b liya
@diya8585 жыл бұрын
This is the only and only place where any student can get a complete satisfaction and clarity of concepts in a detailed way . Thank you so so much sir !
@rawal4sky6562 жыл бұрын
I had always heard that Indian teachers are the best and everyone recommended me to watch their lectures! Today i've seen it as true 😊 Love from Pakistan
@RaviKumar-lc5yn Жыл бұрын
Nuvvu thopu ante
@sadhalaxmi-hs9me Жыл бұрын
@@RaviKumar-lc5yn thopu
@47legendX Жыл бұрын
pakistan ka syllabus same h ?
@rawal4sky656 Жыл бұрын
@@47legendX yes, same ha yahan tak ke chapters ke name bhi same hain
@47legendX Жыл бұрын
publisher bhi? @@rawal4sky656
@AnkitPal-mc1tw2 жыл бұрын
Yrr some teachers have depth knowledge in physics, some have in inorganic...and some teachers have organic....but this man...explains every subject in such a way....that no other teacher can explain......
@NikhilKumarNikhil-pv1td4 ай бұрын
Sir you are the best teacher in the world ❤
@MalikFarhanAwan0014 жыл бұрын
Am from Pakistan... Sir u r doing such a great job... I understand ur lectures very easily compare to others.... Thanku...
@safeerkhan44604 жыл бұрын
@@doubleclash2294 hahahahaha ooooo we DON'T KHNOW
@shikhagupta61144 жыл бұрын
Safeer khan ......u should not say like that to someone , u are asking him why he thinks like that but even we think like that for them , it is the youth who has to understand and build peace ,at least in our speech
@mighty_hasbullah4 жыл бұрын
❤️❤️ from 🇮🇳
@shikhagupta61144 жыл бұрын
Hey ..kainat ... I am sorry I was saying that to safeer khan and not to u due to typo there was some misunderstanding but I really appreciate u bcoz u r praising a Indian for his good work after all ,all we need is positivity from both nations 😊😊
@shikhagupta61144 жыл бұрын
Hope things r clear now 😊😊✌
@prakhartiwari45825 жыл бұрын
BESTEST VIDEO EVER ON HYBRIDIZATION ,YOU CLEARED EVERYTHING ,MAN YOU DESERVE S EVERYTHING THAT YOU WANTS 🦁YOU ARE KING OF CHEMISTRY & PHYSICS
@jakatishabnam60805 жыл бұрын
jhuta
@singhgurmeet40815 жыл бұрын
jakati shabnam kyu be
@shubhangichalurkar6734 жыл бұрын
@@jakatishabnam6080 kyu be kya huva..... Tuze pasand nhi to nikal patli gali se
@aelluminati67114 жыл бұрын
Bahut h.. Or bhi. H KZbin ki duniya se Bahar nikal ke jao.. Best+best teacher milte h.
@mdsalmanrasheed16353 жыл бұрын
@@aelluminati6711 sabki qismat itni achi nhi hoti
@વ્રતકથા3 жыл бұрын
31:03 A movement of silence for tetrahedral geometry 😂😂😂😆😆😆
@basavaraja7187 Жыл бұрын
59:45 I have tried all the problems in every step, guess what all my answers were ✅ 🎉🎉 I didn't even know the meaning of hybridisation but this made me the master in solving. its a super conceptual vedio🎉🎉🎉🎉❤❤❤❤❤❤ tq sir...
@vanispatil18045 жыл бұрын
Sir u can make a new film like super 30 if anyone agrees hit a like
@jakatishabnam60805 жыл бұрын
a pachke
@mukeshgehlot35755 жыл бұрын
Sahi Bola bhai
@greata62235 жыл бұрын
Sambhavana na rakhe😜
@kindofanmol5 жыл бұрын
Super *2 Million.
@sreyasstation-ss95675 жыл бұрын
Ye nahi banaenge, inpe koi aaur banayega
@shrisharanyan3 жыл бұрын
"The percentage of people who skip ads heavily impacts KZbinrs' revenue as KZbin does not count skipped ads as a view, advertisers don't pay for skipped ads, and therefore creators do not get paid for viewers who skip ads." Google says this. So let's appreciate this teacher's sincerity by not skipping ads. He is incredible.
@sarthdhumale55763 жыл бұрын
you get paid for skippable ads also
@sujithreddy54073 жыл бұрын
U r absolutely wrong my friend... 🙃🙃
@shrisharanyan3 жыл бұрын
@@sujithreddy5407 If you feel you know more than google then feel free to think so.
@vivekgoel37803 жыл бұрын
@@sujithreddy5407 he is Right you are wrong Reqd carefully on google
@kirans52123 жыл бұрын
Most ads are unskipable now, so it doesn't matter😂😂🤣🤣
@Muhrat72223 жыл бұрын
He is the best teacher on youtube and thousands of us are getting benefitted by him in these hard days.. Thanks to Corona virus
@NOTDHRUVIN004 ай бұрын
This video got more potent than even the top lectures..
@My_Aim_dude3 жыл бұрын
Alakh sir ! I want to say single line for you " YOU ARE THE DIVINE FIGURE OF KNOWLEDGE "🙏🙏🙏🙏
@ancient91823 жыл бұрын
Sarasvati Maata
@partimashahi11535 жыл бұрын
Tomorrow is my exam and thank you for your video. Which help me in revising the concept of hybridization.
@nikitasingh95205 жыл бұрын
Who want a teacher like Alakh sir in his school. Raise your hand.
@diptijoshi30095 жыл бұрын
Ya
@siddhantsingh90925 жыл бұрын
I love you jaan
@chinmayvaishampayan71335 жыл бұрын
@@siddhantsingh9092 aa Gaya tharki
@mdbasitalam11505 жыл бұрын
@@siddhantsingh9092 here comes the aashique🤣🤣🤣🤣
@worldwinnermritunjaymishra56815 жыл бұрын
☝☝☝☝☝☝🖐🖐🖐🖐🖐🖐🖐✋✋✋✋✋✋👊
@MUHAMMADABUBAKAR-r6h3 ай бұрын
Sir, what's about HCN By using your formula Z=1/2(no of valence electron on central atom+negative charge -positive charge+no of monovalent atom) In this case, it comes *5* Z=1/2(4+1) Z=5/2
@SWORDGAMINGYT3 ай бұрын
Sp hybridised
@farooquisaad23803 жыл бұрын
During the lecture I wish if I could have gave him a towel to clean his sweat🥺❤️🔥
@ashwieen19103 жыл бұрын
😂😂😂
@opinsaanyt90963 жыл бұрын
@@ashwieen1910 this is not a joke u joker
@ashwieen19103 жыл бұрын
@@opinsaanyt9096 get out
@opinsaanyt90963 жыл бұрын
@@ashwieen1910 just shut up!
@ashwieen19103 жыл бұрын
@@opinsaanyt9096 go touch some grass i will never shut up
@tanayshah15646 жыл бұрын
U know,,, u are a perfect teacher Coz u have excellent knowledge U can speak english and give notes in english very well U can explain a person who is new to topic very clearly Thanks to ur mom and dad to make u born on earth May u live forever
@anuduggal35226 жыл бұрын
Aur sir ka itna bada aur saaf dil hai uske liye bhi credit unke parents ki parvarish ko hi jata hai.a gr8 thanks to them. 😊🙄
@hwinter33475 жыл бұрын
Thanks to mother and father? Really man 😂😂
@prajojeet3 жыл бұрын
Sir apko eeise teacher mile the isli app mahan hee . Teacher have 50 % contribution towards excellency , and app hamko bhi apke jaisa bana pa rahe hee
@anshul20077 Жыл бұрын
this person had solved all problems related to our study . Hats off to you Alakh sir 👏👏👏👏
@SUNIL.MEENA.1871 Жыл бұрын
Ashish Singh lecture se padhke dekhna kabhi 👍👍👍
@SUNIL.MEENA.1871 Жыл бұрын
Ashish Singh lecture se padhke dekhna kabhi 👍👍👍
@saumyabalaverma26065 жыл бұрын
37:54 sir Ko bhut pasine aa rhe hai....sir aap bhut mehnat krte ho baccho ke liye....Mai Salam krti hu aapke Iss zasbe Ko.....Bhagwan kre ki KZbin pr Sabse jyaada subscriber aapke ho .....Sbse jyaada famous aapka chaanel ho.
@zeeshanbashir2554 жыл бұрын
Sir kay liye pani kyun nahi lateee
@HeavenlyShorts1 Жыл бұрын
Ho gya ab🙂♥️
@Nestaefootball122 ай бұрын
2024....and sir is founder of one of the biggest coaching industry in India PW
@susanjacob49474 жыл бұрын
I wish I had you as my Chemistry Professor....you have so much patience and passion for your subject
@mohanapriya33944 жыл бұрын
Not only chemistry even physics too
@harshnain4 жыл бұрын
The best video on hybridization ever. He is the best teacher really.
@dr.h.k.rohilla3445 Жыл бұрын
Salute for Right Teaching. You have changed the whole scenario in the world of teaching Deep Regards
@girrajsaini15025 жыл бұрын
Who want Class of 12th in 2020👨🏫👨🏫 by Alakh sir hit like 👇👇👇👇👇👓
@priya-nh1cs5 жыл бұрын
Sir already pada rahe hai
@girrajsaini15025 жыл бұрын
Bhai 2020 ke liya
@girrajsaini15025 жыл бұрын
Mera matlab h section 2020-21 ki liya
@priya-nh1cs5 жыл бұрын
Sir bsc padaenge 2020-2021😁😁
@girrajsaini15025 жыл бұрын
@@priya-nh1cs bhai ☀ mein abhi 11th mein hu 🙃
@syedabduljaleelshah68933 жыл бұрын
this content is two years old but still very useful whenever you have any doubt or for revision purposes solution is here, really the way sir teaches us is appreciable , the movement when sweat comes on the sir's face was a point to notice that sir has worked hard to become an iconic figure as whatever sir is today , this sweat is also a motivation for us that the solution of your problems and how better is our tomorrow is only hardwork .
@devarapallivamsi29812 жыл бұрын
2 years then.. 3 years now..!! and they will be the best lectures forever