Resonance Structures

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Hannah Pham
Posts: 104
Joined: Fri Aug 09, 2019 12:17 am

Resonance Structures

Postby Hannah Pham » Sun Oct 27, 2019 8:55 pm

How do we know how many resonance structures a molecule has?

Kaylee Sepulveda 4G
Posts: 100
Joined: Thu Jul 11, 2019 12:16 am

Re: Resonance Structures

Postby Kaylee Sepulveda 4G » Sun Oct 27, 2019 9:02 pm

I don't believe there is a particular formula for determining the number of resonance structures, so you would count the number of possible resonance structures by drawing every valid lewis structure until there aren't any possible alternative configurations.

AndreiRekesh1I
Posts: 52
Joined: Fri Aug 30, 2019 12:15 am

Re: Resonance Structures

Postby AndreiRekesh1I » Sun Oct 27, 2019 9:04 pm

This isn't true for all cases but usually resonance structures can be drawn whenever the diagram of a molecule has different types of bonds to a center atom whose locations are interchangeable. All the possible combinations of how these bonds can be arranged would be the number of resonance structures.

Jennifer Yang 3F
Posts: 56
Joined: Wed Sep 11, 2019 12:17 am

Re: Resonance Structures

Postby Jennifer Yang 3F » Sun Oct 27, 2019 9:21 pm

I believe you just have to measure all the possible resonance structures.

Charysa Santos 4G
Posts: 107
Joined: Wed Sep 18, 2019 12:21 am

Re: Resonance Structures

Postby Charysa Santos 4G » Sun Oct 27, 2019 9:22 pm

If there are multiple places where the center atom can bond with the outer atoms and these bonds are interchangeable, I believe that you just have to count/take account of all of these different forms to get the number of resonance structures.


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