Exceptions To The Octet Rule - Lewis Dot Diagrams
This chemistry video tutorial discusses the exceptions to the octet rule while providing the lewis dot diagrams of the molecular compounds involved. BH3 has an incomplete octet - that is, it has less than 8 electrons. Molecules such as ICl5 and PCl5 have an expanded octet which means the center atom has more than 8 electrons. The last category are molecules with odd number of electrons such as NO and NO2. These will always be electron deficient and contain an incomplete octet at the nitrogen atom.
How To Draw Lewis Structures:
• How To Draw Lewis Stru...
VSEPR Theory:
• VSEPR Theory - Basic I...
Molecular Geometry:
• Molecular Geometry & V...
Lewis Dot Structures:
• Lewis Dot Structures -...
Lewis Structures of Ionic Compounds:
• How To Draw The Lewis ...
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Octet Rule Exceptions:
• Exceptions To The Octe...
Resonance Structures:
• Resonance Structures, ...
Polar and Nonpolar Molecules:
• Polar and Nonpolar Mol...
Formal Charge Calculations:
• How To Calculate The F...
Lewis Structures - Mega Review:
• Lewis Structures, Intr...
________________________________
Hybridization of Atomic Orbitals:
• Hybridization of Atomi...
Molecular Orbital Theory:
• Molecular Orbital Theo...
Dipole Dipole Forces of Attraction:
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Hydrogen Bonding:
• Hydrogen Bonds In Wate...
Unit Cell Chemistry:
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2 жыл бұрын
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2 жыл бұрын
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2 жыл бұрын
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2 жыл бұрын
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2 жыл бұрын
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8 ай бұрын
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8 ай бұрын
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2 жыл бұрын
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3 жыл бұрын
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3 жыл бұрын
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3 жыл бұрын
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3 жыл бұрын
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@monkeyninja7988
3 жыл бұрын
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Just to help you guys- when he draws ICl5, he forgets to draw the 6 valence electrons around EACH Cl. Remember, the valence electrons are still there!
@julianoliver4386
3 жыл бұрын
thats what i came to the comment section for!
@samusaran13372
2 жыл бұрын
often times in higher chemistry courses, they will be omitted. but yeah you're right, and in gen chem or high school chem, teachers will likely take points off.
@jakestewart9
Жыл бұрын
tysm for saying that, i was so confused lmao
@glosephXO
Жыл бұрын
Thanks a bunch. Came to the comments hoping someone would confirm this😅😅
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Professor Organic Chemistry Tutor, thank you for a fantastic analysis into the Exceptions to the Octet Rule in AP/General Chemistry.The examples/practice problems shows the complete Octet Rule and when they are violated in Modern Chemistry. Professor Organic Chemistry Tutor, thanks to the viewers for finding and correcting the errors in this video.
Thank you! Unlike most people who come to youtube to learn, I have had a phenomenal professor, however even then I was unable to grasp VSEPR and Lewis Structures. you have made it so incredibly clear.
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thank you so much, I’ve been struggling for weeks, and I finally understand!!
Dude, from one teacher to another. You're great at this. (Even if I am 6 years late to the party.) Your accent make's it interesting. "So that's BH3, that's just how it is. You gotta problem wit dat, wise guy?" OH, LOOKAT dis guy, with his exception to the octet rule. "HEY, I'm doin' Chemistry heah." etc. etc.
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I struggled with this concept for days. Thankyou so much☺️☺️.
Thankyou, I have been wondering why there were so many exceptions to the octet rule!
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Well explained. Expectations arise for more in future.
2:02 sounds like "the reason why nitrogen can have 8" -- he meant to say nitrogen CAN'T have more than 8. just a clarification for u guys
@enderslot467
4 жыл бұрын
how about the first row? can they be expanded? ..no? ....iam stupid
@KishoreG2396
4 жыл бұрын
@@enderslot467 No they cannot because the first row only has the 1s orbital, which can only hold 2 electrons maximum.
@enderslot467
4 жыл бұрын
@@KishoreG2396 so..question sir what is the valence of the column of He
@fkncompton7124
4 жыл бұрын
@@enderslot467 He column (Noble gases) have 8 valence electrons
@jasonma6177
3 жыл бұрын
I think it was his accent, I listened to it again and I think he said, "The reason why nitrogen can't have more than eight"
Thank you so much!! I think I get the octet rule now :)
Thank you for improving my knowledge in chemistry
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better than some of the videos with many more views
Thank you for this help I appreciate it! But there should be 3 lone pairs on each Cl atom at 5:45
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Жыл бұрын
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Жыл бұрын
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hi sir, may i ask when do we need to calculate those lone pairs?
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Does that lone pair calculation only work when the central atom doesn’t follow the octet rule?
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Someone help what's happening at NO2 at 12:10? Oxygen isn't donating anything. And given that Nitrogen primarily has 5 ve at the start, im assuming a coordinate bond has been formed with the Oxygen atom on the right? SInce it looks like two electrons have been donated to Oxygen there by Nitrogen solely. If we assume that two have been donated to oxygen by nitrogen on that side, only then does it imply that it had 5 valence electrons in the beginning. Otherwise it doesn't make sense. Am i getting anything wrong?
Hi, when I try to get the lone pairs in NO my answer is 3/2, what does this mean?
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Please can you explain the preparations of different organic compounds
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Does that formula of L.P work for ions just as well as for molecules ?
thanks
watching this for online class because my teacher is useless :/
Wait, the electron configuration for P is 1s2,2s2,2p6,3s2,and 3p3. 2+2+6+2+3=15. That is the atomic number of P.
THANKS
So can an expanded octet create an extra shell if the number of electrons exeed 8?
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I have an urgent question. 1.Becl2 is below octet where Be would have 4 valance electrons but my question is can't we make double bond with both chlorines and make it 8?☹️??
Why without ion charges? We in Germany learn to do it with those and not single electrons. Also the formula to calculate the lone pairs doesn't apply to every molecule. like methylisonitril f ex. Idk if I'm right pls correct me if I'm wrong
hi for theast example is a dative bond formed?
Good
Thank you! But, doesn't the last electron on NO2 go to O and not N since O is more electronegative?
@sharinanatasha4453
6 жыл бұрын
yup
@josephtran4891
6 жыл бұрын
I think it's b/c the two Oxygen atoms have already achieved 8 e- based on the octet rules, so N atom can have that last e-. Please correct me if I'm wrong. :D
@rahmabanistany3305
6 жыл бұрын
Always check Ur structure by several ways ,with LP and FC and electronegative best way is to check it by FC(formal charge)!
DOUBT 10:45 DOES IT MATTER IF WE LETS THE NITROGEN ATOM HAVE A ONE FULL LONE PAIR AND ANY OF THE TWO OXYGEN "WITH THE SINGLE BOND" HAVE 2 LONE PAIRS AND A SINGLE UNPAIRED ELECTRON? (and also how can you just give an oxygen atom an electron just because it has to satisfy the octet rule??)
I see people draw calcium with the 3rd shell with 8 electrons and the valence with 2. Can you explain why? This is in the third row, so it’s a little confusing
You're a boss
Do we show charge on hypervalents or not?
I came for the NO!🎉
In the case of so4 where number of lone pair on the central atom is -1?