Resonance Structure

(Polar molecules, Non-polar molecules, etc.)

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Cristian Carrasco 1F
Posts: 52
Joined: Fri Sep 29, 2017 7:06 am

Resonance Structure

Postby Cristian Carrasco 1F » Tue Nov 07, 2017 8:23 pm

I'm confused with resonance structure can someone please explain what it is ????

Lena Nguyen 2H
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Re: Resonance Structure

Postby Lena Nguyen 2H » Tue Nov 07, 2017 8:30 pm

Resonance structures are when the location of double bonds or triple bonds can be drawn in different locations while still being the same molecule. An example would be (NO3)- can have its double bond on any of the oxygen. This is just for Lewis structures, though. In reality, the molecule will be a blend of all three resonance structures and will be called a resonance hybrid.

Justin Yu 3H
Posts: 36
Joined: Fri Sep 29, 2017 7:07 am

Re: Resonance Structure

Postby Justin Yu 3H » Wed Nov 08, 2017 3:48 pm

Another important thing to note is that resonance stabilizes molecules. Since the electrons are more delocalized, they occupy a greater volume and the energy of the molecule is lower, making it more stable. Also, like the previous poster mentioned, the resonance structures you draw would be potential variations of the same molecule, but the actual NO3- molecule would have 3 bonds with a bond order of 1.33.

Adrian Lim 1G
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Joined: Fri Sep 29, 2017 7:03 am

Re: Resonance Structure

Postby Adrian Lim 1G » Thu Nov 09, 2017 10:47 am

Does anyone know if we're expected to list all the possible resonance structures wherever applicable on the midterm?

Thanks

Chem_Mod
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Re: Resonance Structure

Postby Chem_Mod » Thu Nov 09, 2017 10:49 am

Adrian Lim 1J wrote:Does anyone know if we're expected to list all the possible resonance structures wherever applicable on the midterm?

Thanks


No. The question will be specific. Draw the most stable structure and give one resonance structure, etc.


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