I'm in year 12 right now (UK) and the fact that I can understand this (even though it's beyond Alevel) shows just how good she is as a lecturer!! I wish I had teachers like her!
@@akshat_shukla00 why tf it sucks on the fact that it was taught in 11th? I am an indian too but we indians just try to drag this thing everywhere that our education system sucks even if its not even the context of ongoing discussion. I know its sucks but dragging it everywhere wouldnt help either.
When i was low on fuel i reconstruced the electrical engeneering wireing to absorb friction electronics gathering of power into the batteries Nd recycle the spent fuel aboard the ship
In Ph3 bond angle is 90' as sp mixing is negligible because d orbitals can't be contracted because surrounding atom has less electrongativity so there are 3 p pure orbitals which are perpendicular to each other .
4:44 listen to this statement this statement changed a big misconception of mine which was there with me for years, I suggest this highly if you are a jee aspirant
And so this lecture makes it clear as to why every STEM major needs multiple areas of math. Everyone knows physics and engineering has shit ton of math but so can chem and bio.
soap 7 hello Soap 7, could you explain, in case of nitrogen, which sigma bond will be counted either from 2s or 2pz, and lone pair comes from where? Thank in advance
@@mossammadu.c.sultana8548 well NH3 undergoes hybridization unlike it's other members of group 15. It is explained by drago's rule. And it has a lone pair because nitrogen has 5 valence electrons out of which the vacant p orbitals form hybrids with Hydrogen s orbital. The two paired electrons are lone pair.
Whats the difference between the bond angle of NH3 and PH3? Both N and P have lone pairs. Perhaps P having an unfilled 3d orbital does have an effect in the difference in bond angles.
best explaination, you must have a happy class with exciting comphrehension. you saved my time and i will follow up on your videos as they are much effective in learning and comphrehension.. thank you so very much
In ph3 drago rule is operated which 3rd period and above periods of p blocks elements does not undergo hybridization when connected with less electronegative element like hydrogen!!
When positive parts of wave have been used to form the bonding orbital, now where positive part is left to form anti bonding orbital Either we should speak positive and positive will make bonding and negative negative will form antibodies or we should speak either there will be bonding or there will be antibonding
well i think the bond angle would be greater than 90 but near to it and only option it would fit would be angle less then 109 so i think that's why it was the correct answer
(13:15) won't spin be the overriding factor as to whether a covalent bond forms ?? the spin magnetic moment between the two electons wanting to align the spins (up - down) will be way higher than the orbital magnetic moment around the nucleus or won't it ?? wish the professor would explain the reason
One thing I don't understand and not found anywhere till now is how bonding and antibonding molecular orbitals can form simultaneously i e if we are linearly combining and atomic orbitals they can either combine constructively or destructively how both of them are happening together? I e why do we consider all the POSSIBLE COMBINATIONS only one of them can happen not both.
Shouldn't the answer to the clicker question be 'approximately 90 degrees' as the hybridisation of the central atom isn't considered in the hydrides of atoms in the nitrogen family below the second period according to 'Drago's Rule'?
in the formation of MOs, it looks like a chanced base whether it will be the bonding type or antibonding type than at the energy scale why it seems that both BMOs and ABMOs are being formed at the same time.
This is amazing! Is there a continuation of this lecture or another lecture maybe, explaining poliatomic orbital theory, molecular term symbols, point groups maybe and their relation to degeneracy???? PLissss
Well I wanted to learn about The Molecular orbital Diagram of N2 ²- Had a doubt wether your eating the pie trick will work here ? Or it is different ?.
Love this. Great primer on MOT. Makes it look so simple. Could have done with Jack Griffin at 46:40 “Alright everybody, let’s go ahead and start to shut up now. Let’s go ahead and, ah, start to settle into your seats and, ah, begin shutting your mouths”
Catherine Drennan you are literally my saviour! I wish my professor taught things with the same level of explanation and passion as you!
Thank you so much, Catherine. You've become one of the best chemistry lecturers I've ever witnessed. Great explanations!
it's almost impossible to not to understand her. Thanks, for such a great video!!!
1:01:41 aí a prof realmente se empolgou, e com razão. Isso é paixão. admirável. Meus parabens.
ழுஜுவோஞமழாவுஸ ழுமுபஜு த ழழூஜா. ஐமுழஜேஜே
these courses are life saving
thank you MIT
I'm in year 12 right now (UK) and the fact that I can understand this (even though it's beyond Alevel) shows just how good she is as a lecturer!! I wish I had teachers like her!
Hi
How are you!
Man, our education system sucks, in India these are taught to year 11.
@@akshat_shukla00 why tf it sucks on the fact that it was taught in 11th?
I am an indian too but we indians just try to drag this thing everywhere that our education system sucks even if its not even the context of ongoing discussion.
I know its sucks but dragging it everywhere wouldnt help either.
@@binodtharu8348 eh, I made that comment 8 months ago, don't get worked up
Here Pi on t shirt is not from maths, it's chemistry
When i was low on fuel i reconstruced the electrical engeneering wireing to absorb friction electronics gathering of power into the batteries Nd recycle the spent fuel aboard the ship
The answer to PH3 should be about 90° because it is a Dragos Molecule; doesn't undergo hybridization and has a lone pair as well.
Yes absolutely is should be 93°
Exactly!! I was searching for this and was surprised that there is only one comment!!!
Exactly!!
The lecture is really good and deeply understandable. Thank you Ma'am.
Such a great teacher. Wish i got a teacher like u... Great explanation
Ma'am, you are great. Thank you MIT Opencourseware , thank you ma'am. THIS VIDEO IS LIFE SAVER ❤️💯💯
Professor Catherine thank you for this awesome class. I understand alot now
I wish I were in the class all the above in MIT😶🔥🔥🔥🔥🔥
Thank you! I cannot believe it took me just this video to understand this theory.
In Ph3 bond angle is 90' as sp mixing is negligible because d orbitals can't be contracted because surrounding atom has less electrongativity so there are 3 p pure orbitals which are perpendicular to each other .
jeetard
God of inorganic vj sir...
It's my first time to understand all lecture well.
MY LIFE'S BEST EXPLANATION OF PI ORBITAL IN MOT!
Lucidly explained. Thankyou, Catherine!
4:44 listen to this statement this statement changed a big misconception of mine which was there with me for years, I suggest this highly if you are a jee aspirant
this is really legit. first time I have ever understood this
It's what I wanted as a explanation..... 👍
Thank you, I did not understood this theory very well in class, and your explanation made total sense to me now
What a great lecture, thanks from Germany!
It's great to watch the lecture after studying the topic.
Really helpful...
Grateful I m
And so this lecture makes it clear as to why every STEM major needs multiple areas of math. Everyone knows physics and engineering has shit ton of math but so can chem and bio.
All the way from India...loved the class!
actually in PH3 hybridisation is negligible because of drago's rule so the angle should be approximately 90 degrees
soap 7 hello Soap 7, could you explain, in case of nitrogen, which sigma bond will be counted either from 2s or 2pz, and lone pair comes from where? Thank in advance
@@mossammadu.c.sultana8548 well NH3 undergoes hybridization unlike it's other members of group 15. It is explained by drago's rule. And it has a lone pair because nitrogen has 5 valence electrons out of which the vacant p orbitals form hybrids with Hydrogen s orbital. The two paired electrons are lone pair.
Whats the difference between the bond angle of NH3 and PH3? Both N and P have lone pairs. Perhaps P having an unfilled 3d orbital does have an effect in the difference in bond angles.
Hybridization does not occur in hydrides of and above 3rd period @@roberttaie7760
best explaination, you must have a happy class with exciting comphrehension. you saved my time and i will follow up on your videos as they are much effective
in learning and comphrehension.. thank you so very much
1:01:15 - This crazy molecule, O2, is what makes life on earth possible and yet it destroys everything it comes to contact with !
Doesn't PH3 have bond angle close to 90 degree as it has unhybridized pure p orbitals?
Yep
yes thats also what i thought same goes for SH2
Nope Tetrahedral have angle 109.4 and due to a lone pair in PH3 bondpairs come closer
Right. I was thinking the same.
Yes dragos rule
"A half, it's always a half."
It's stuck to my brain now 😂
In ph3 drago rule is operated which 3rd period and above periods of p blocks elements does not undergo hybridization when connected with less electronegative element like hydrogen!!
Yeah and the *bond angles* should be ≈90° not
explains what an entire chapter of my textbook barely does
Best lecture of my life
She Rocks!!
Thank you so much, Catherine
Thanks alot madam thats enough for my first semester exam
the second half is amazing
🐥👈he says thanks for leveling the playing field ….. He supports your team ….These videos keep getting more and more and more useful…. 🤩 wow…
When positive parts of wave have been used to form the bonding orbital, now where positive part is left to form anti bonding orbital
Either we should speak positive and positive will make bonding and negative negative will form antibodies or we should speak either there will be bonding or there will be antibonding
Thank you so much Catherine
Its really helpful
It has helped me in grasping concepts of (LCOA)
I am very thankful to both MIT and madam who delivered this lecture
professor thank you so much and for MIT also!
I can't believe I am learning with MIT students.
Thanks to MIT. Thanks to professor Catherine.
good stuff
This video is amazing thank you so much Catherine ma'm......,.......
This is such an amazing lecture. Truly fabulous at what she does! Thank you.
I think the bond angles in ph3 should be 93 deegrees each ,as a consequence of Drago's rule.
well i think the bond angle would be greater than 90 but near to it and only option it would fit would be angle less then 109 so i think that's why it was the correct answer
brilliantly explained, all of it
Thank you! It was great to see this!
Please share some assignment links .
And the lectute was very good.
Thank you MIT , really helped me understand MO Theory basics
(13:15) won't spin be the overriding factor as to whether a covalent bond forms ?? the spin magnetic moment between the two electons wanting to align the spins (up - down) will be way higher than the orbital magnetic moment around the nucleus or won't it ?? wish the professor would explain the reason
Thanks a lot prof!
You're the best
One thing I don't understand and not found anywhere till now is how bonding and antibonding molecular orbitals can form simultaneously i e if we are linearly combining and atomic orbitals they can either combine constructively or destructively how both of them are happening together? I e why do we consider all the POSSIBLE COMBINATIONS only one of them can happen not both.
Thank you for the refresher on MOT!
Wow, a crystal clear lecture !!!
Thanks Catherine.
Life saver, she is :)
Shouldn't the answer to the clicker question be 'approximately 90 degrees' as the hybridisation of the central atom isn't considered in the hydrides of atoms in the nitrogen family below the second period according to 'Drago's Rule'?
Thank you ma'am.. I love you for this.may God bless you.
56:44，shouldn’t it p orbital? Not Pz
in the formation of MOs, it looks like a chanced base whether it will be the bonding type or antibonding type
than at the energy scale why it seems that both BMOs and ABMOs are being formed at the same time.
This is amazing! Is there a continuation of this lecture or another lecture maybe, explaining poliatomic orbital theory, molecular term symbols, point groups maybe and their relation to degeneracy???? PLissss
There is a playlist of these series, check em out :)
In the description
Why not dragos rule in the 1st question? The angle becomes 90° due to the large size of phosphorous in comparison to those tiny hydrogen atoms
Thank you so much this saved me
Why she didn't explained about the type of nodes in ABMO ? I thought there'll be more description about the nodes ( like their names etc )
Well I wanted to learn about The Molecular orbital Diagram of N2 ²-
Had a doubt wether your eating the pie trick will work here ? Or it is different ?.
I would like to know more about wave functions
Can u please explain why sigma 2p orbital energy varies with atomic number,and how did u compare energy between sigma 2p and pi 2p
This is really helpful..... I was struggling with the concept of molecular orbitals....all of my doubts are clear now...thank you....
much love
Thank you very much.
What means @59:00? Why will biradical break a bond??
Love this. Great primer on MOT. Makes it look so simple. Could have done with Jack Griffin at 46:40 “Alright everybody, let’s go ahead and start to shut up now. Let’s go ahead and, ah, start to settle into your seats and, ah, begin shutting your mouths”
Thanks a lot.... It has a great content.... Thanks once again😀😀
It is fucking awesome that you need quantum mechanics to properly explain why hydrogen forms H2.
Thank you! very helpful
45:29 eu senti essa referência, minha ex-namorada disse o mesmo :´( mas a piada foi boa, excelente aula.
When drawing a diatomic compound with different heteroatoms, electronegativity would indicate the energy levels in which the AOs lie.
Very nice lecture.
Thnxs a lot ma'am for the wonderful lecture
Nice lecture mam
Very helpful lecture. Also the professor looks like actress who plays the dragon queen lady on Game of Thrones.
Thanks a bunch no no no thank a billion 🙏.
It was wonderfully helpful.
"not necessarily enough to power star-ship"
reference->Star Trek
cringe -> very much
How is it a reference? Simply because they have starships in star trek?!?
U know how to make students understand
Wait isn't the first one's answer slightly less than 90 degrees since phosphorus doesn't undergo hybridization in ph3
thank you
With reference to the clicker question , wouldn't the angle be 90 degrees because the p atom would remain unhybridized as per drago's rule?
What does it mean that the molecular bond axis is cylindrically symmetric?
Thank u soooooo much🤗🤗🤗
thks a lot...very helping love from india
How can two atoms combine constructively and destructively and the same ?
Probability factor
Mam, your lecture was awesome. Please let me know from where did you get the info regarding He 2 existence.
This is great 👍
Thanks 🌹