Lewis Structure for Organic Chemistry Molecules Orgo Basics 5 

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Extremely helpful, giving me the chance to practice for my licensure exam.

This video is amazing and explains in details! Great for studying.

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This video has made me able to solve all questions regarding Chemical bonding and molecular structures. Thank you so much!

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thnk leah i know it was not that hard to explain great teacher.

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Question:Why are we giving Carbon a lone pair when it has only 4 electrons in the outer shell shouldn't we give it just 1 electron. Please answer fast.

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I understand how to calculate formal charges of ions/atoms... but at 7:48 if Nitrogen is more electronegative than Carbon then why is it acceptable to put the formal (negative) charge on Carbon?

4:21 starting to make sense 5:20 formal charge 9:11 formal charge phosphate

01:30 What if you don't know yet how the atoms are connected? (E.g. all you have is the atomic composition, i.e. how many atoms of every particular element are there.) 11:05 Earlier you said that phosphorus can take up to 12 electrons (or 6 bonds). So why can't we move some more lone pairs towards it to get rid of the charge on those oxygens? My guess is that it won't really get rid of that charge, just move it closer towards the phosphorus, so there will still be 3- charge overall. Is this correct? But then, speaking of resonance, in real world it's not that just one of those electrons donates its lone pair to the phosphorus and the other three stay put - it's more like shifting those electrons in bonds closer towards the phosphorus from all sides (all four oxygens) at the same time, and those bonds becomething something in between a single and a double bond. The bond gets shorter than a sigma bond, but not as short as the full double bond, and the electrons move just closer enough to the phosphorus as needed to cancel its 1+ charge (so a 1/4 contribution from each side is enough). (Of course there's no such thing as 1/4 of an electron, but I'm speaking of the electron density here, as if the half-way between the centres of atoms were an invisible boundary, and the more of the electron density from one side crosses to the other side, the more "fractional charge" goes there.)

Will you help me with the structure of NO2. I tried my best but I was unable to draw it. I hope you will reply mam.

Eei I have a questions. Why 4 electrons become one bond? 2 electrons should become one bond, no?...

Mam,this checklist doesn't applicable for drawing the Lewis structure of superoxide.can u explain why?