Resonance Structures  [ENDORSED]

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Tim Foster 2A
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Joined: Fri Sep 29, 2017 7:07 am

Resonance Structures

Postby Tim Foster 2A » Sun Oct 29, 2017 10:46 pm

How do we draw a representation of a resonance structure? Is it just a combination of all possible configurations?

Clement Ng
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Re: Resonance Structures

Postby Clement Ng » Sun Oct 29, 2017 10:59 pm

You draw a resonance structure by drawing all the possible structures and arrows that show that the molecule oscillate between the different lewis diagrams.

Julian Krzysiak 2K
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Joined: Fri Sep 29, 2017 7:07 am

Re: Resonance Structures  [ENDORSED]

Postby Julian Krzysiak 2K » Sun Oct 29, 2017 11:04 pm

A resonance structure would just be the Lewis structure of all the possible configurations of the bonds in a molecule. This is signified by a double arrow between each possible Lewis structure, showing the possible resonance structures of the molecule. But the best representation of a molecule would be the resonance hybrid, which is the blending (average) of all the resonance structures. And this is shown by adding dotted lines where other resonance bonds would be in the same structure (make sure when adding the resonance bonds, to also change the e- configuration to match the bond.) And so, we have the best representation of a molecule, the resonance hybrid, by combining the resonance structures together.

Michelle Lee 2E
Posts: 64
Joined: Thu Jul 27, 2017 3:01 am

Re: Resonance Structures

Postby Michelle Lee 2E » Sun Nov 05, 2017 4:25 pm

I agree with the two responses given.
Would the resonance structure be wrong if one of the forms of the Lewis Structure was missing and we didn't go back to check that it was missing? Also, Formal Charge allows us to figure out the best or closest model/structure to the actual structure (to my knowledge). Which would be a better representation, a formal charge analysis for the best lewis structure or a resonance structure? Or are they the same?

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