Formal Charge Practice Problems with Explanations

[@comradeuu3837]

Your videos really helped me in my first year of college and my first chemistry exam. Now, after my last biochemistry exam a few weeks ago I rewached your videos and realized how easy and basic the former hard suff suddenly became. Thanks for your teaching, keep up the good work and greetings from Germany!

[@wbreslyn]

Danke, froh, dass ich helfen konnte! Interesting how quickly we can learn such challenging information. --- Dr. B

[@tomeee8526]

You're a teaching god. I went from not knowing any of my class's materials for the past week to knowing all of it in under 20 minutes. Well done

[@wbreslyn]

Excellent, glad I could help! --- Dr. B

[@iva9858]

I know right, Im styding for my test tomorrow and his channel is the only thing that actually helped me

[@omerege3495]

@@wbreslyn is it "Bruh" for Dr. B?

[@ThaoTrangPhotography]

THANK YOU SO MUCH! After watching 10 minutes of your video, I understand it so much better than reading my college textbook! You are amazing! This was by far the most simple and straightforward video ever. Nice and clean example.

[@wbreslyn]

Glad it helped!

[@ravinduwijayarathna6238]

Awesome video, most of the videos on internet explains formal charge based on its equation.. none of them ever explained why formal charge is important..

[@wbreslyn]

Thanks. I think you hit on a key part of learning science - understanding the "why" of equations/notation/models/... It's often possible to pass a test without this knowledge but hard to be a successful scientist . --- Dr. B

[@raje1147]

Thankyou sir this helped me for my JEE exam

[@kevinhevans]

Thank you! That was a very helpful video. I'm preparing for the ACS exam and I feel like this was something I never truly learned until now!

[@wbreslyn]

No problem and all the best on your ACS exam! --- Dr. B

[@KushagraVyas-j7b]

Thanks sir for this video because in my school exams these type of questions are mostly asked. I never know what is formal charge and how it should be calculated , I always make mistakes in between calculating FC. But after watching this I am glad that I can do any problems based on this topic.

[@wbreslyn]

That is great to hear!

[@fransseakamela4229]

thank you for the clear explanation and workout my lecturer was doing senseless things..thank and God bless you

[@wbreslyn]

You are most welcome!

[@sarthpetkar9311]

Because of you it is easy to understand the concept in limited time

[@wbreslyn]

Happy to help!

[@sumrikdewanji9168]

Thank you Sir . Scientific Reasons for the importance of formal charge .

[@wbreslyn]

No problem! This page has a good dicussion about the "why" of formal charge: www.chem.ucalgary.ca/courses/351/Carey5th/Ch01/ch1-3-2.html

[@sumrikdewanji9168]

@@wbreslyn Thank you Sir .

[@noehl7253]

3:25 5:03 6:12 8:00

[@seemabajpai5693]

Awesomely explained sir, I was here for just to try these questions...

[@wbreslyn]

Great 👍

[@sharvani223]

You are a fabulous teacher Dr.B .....with love from India!

[@wbreslyn]

Thanks for the kind words! --- Dr. B

[@sridevi203]

Thanks

[@SomeRndomGuyzz]

I took chemistry last year and your channel was super useful. Thanks. I'm unsubscribing now because my academic interests are more language-related, but I hope you continue making these.

[@wbreslyn]

Thanks for the encouragement and all the best in your language studies! --- Dr. B

[@maximchowdhury6203]

I think that instead of "1/2 bodned electrons", we can use "the number of lines attached to it"

[@wbreslyn]

Yes, that should work. There a few different forms of this equation but all do the same thing and give the same answer. --- Dr. B

[@thekambIer]

Is there any order to writing the calculations? Example: do you do least valence electron atoms to most valence electron atoms when writing them down on paper?

[@rafisk6636]

Awesome explaination.

[@wbreslyn]

Glad you think so!

[@madhusudanpanda9251]

Thank You

[@kgosigadimokgethi8998]

Thank you so much!

[@wbreslyn]

You're welcome!

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thank you sir for your videos!!!

[@wbreslyn]

Glad you like them!

[@katherineflores5415]

Thank You !!!

[@wbreslyn]

No problem! --- Dr. B

[@ishanrai1227]

Thanks a lot

[@wbreslyn]

Most welcome!

[@strangergranger10]

I want to learn this and I don't if I am going to take this subject in college. I just want to have a self study. How can I start? I mean I want to know it chronological order can you help me? By the way this video is awesome!

[@wbreslyn]

I'd recommend OpenStax at Rice University (openstax.org/details/books/chemistry-atoms-first) supplemented with KZbin videos. MIT Courseware has some good courses (I like this one: ocw.mit.edu/courses/chemistry/5-111-principles-of-chemical-science-fall-2008/). All should be available at no cost. My website (www.thegeoexchange.org/chemistry) also has some useful content. The other thing is to find someone else interested in learning chemistry as well and work through problems together. That’s essential for meaningful learning. All the best, Dr. B.

[@strangergranger10]

Wayne Breslyn non of these websites are working😒

[@wbreslyn]

Odd, not sure why. Try going directly to openstax.org/ . You could also search on Openstax and it should come up. Same for MIT Courseware. See if that works ...

[@strangergranger10]

Wayne Breslyn that one is working thank you! What about app do you know anything that cover math or science??? Thank you anyway

[@wbreslyn]

I don't know much about apps. One thing to keep in mind is that technology is helpful but having a clear learning goal and finding other people with similar goals is equally important. Chemistry is most interesting when you learn to understand something like neurotransmitters, clean energy, etc.

[@alyaasaad433]

Awesome 🙊👏👏👏

[@MirzaNayeemAhmed]

👍👍👍 thanks for the videos.

[@wbreslyn]

You're welcome, glad I could help with formal charge! --- Dr. B

[@prachichanda6155]

Sir are 2 oxygen atoms bonded to nitrogen by dative bond in NO3-?is that why all 5 electrons of nitrogen are used up? Also thank you for Making chemical bonding so much easier for me 😄

[@wbreslyn]

Glad I could help with chemistry! Take a look at this discussion about the two dative bonds in the nitrate ion (NO3-): www.quora.com/Why-does-NO3-N-O-3-minus-have-2-coordinate-bonds-instead-of-a-3-double-bond --- Dr.B

[@archijyotirmayeevishwanidh629]

@@wbreslyn Thank you !

[@kgosigadimokgethi8998]

So whatever atom that is below period 3 can form expanded octets?

[@wbreslyn]

That's the idea! The Octet Rule: kzbin.info/www/bejne/bHbGo2qjYpV4Zqc Exceptions to the Octet Rule: kzbin.info/www/bejne/epzNXoaDd7GEsK8

[@kgosigadimokgethi8998]

@@wbreslyn thank you very much.

[@yajatyadav3348]

for the last problem, why can't you have ONE double bond and 2 single bonds with the oxygen? That way, all atoms have eight electrons in their valence shells. Xenon will just have a lone pair on it.

[@wbreslyn]

Interesting idea. The only problem is that you wouldn't be using all of the valence electrons. --- Dr. B

[@yajatyadav3348]

I checked, but in both cases, there were all 26 electrons used. The only difference I saw was that Xe didn't have an expanded octet. So, would this still be a valid structure as all valence electrons are used?

[@wbreslyn]

With two single bonds, and one double bond you'd need to have a lone pair on the Xe to use the 26. This would be a valid Lewis structure. However, if you look at the formal charges the Oxygen atoms with single bonds each are -1. The Oxygen with a double bond has a formal charge of zero. The Xe has a formal charge of +2. So while it is a valid structure, the Lewis structure with each element having a formal charge of zero is more likely and considered a more favorable structure. Take a look at my video kzbin.info/www/bejne/rICpcoOippmslc0 for more on formal charges. --- Dr. B

[@ΧριστίναΚλεάνθους]

thnx a lot:)

[@wbreslyn]

No problem! --- Dr. B

[@brothersofosman4447]

Hey can you please help we workout of the molecule N=N=N in which the 1st and last nitrogen atoms have 2 lone pairs each. Please let me know. Thanks

[@wbreslyn]

I believe this is what you are looking for: kzbin.info/www/bejne/gX28aJVue8yfrJI . --- Dr. B

[@basubandhubhattacharyya5601]

1:06

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Do u know my friend Spencer Breslyn he told me your his uncle

[@wbreslyn]

I know OF Spencer Breslyn. He is an absolute legend! I hear he has a secret KZbin channel. --- Dr. B

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Volume koncham penchandi. We unable to hear your voice

[@wbreslyn]

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