Resonance Structures

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EthanPham_1G
Posts: 82
Joined: Sat Jul 20, 2019 12:17 am

Resonance Structures

Postby EthanPham_1G » Thu Oct 24, 2019 11:22 pm

Can someone explain what the purpose of resonance structures are? Do we have to draw all the resonance structures for every molecule's Lewis structure?

Katie Kyan 2K
Posts: 88
Joined: Fri Aug 09, 2019 12:16 am
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Re: Resonance Structures

Postby Katie Kyan 2K » Fri Oct 25, 2019 12:12 am

Resonance structures are basically alternate Lewis structures for a molecule. We don't have to draw all the resonance structures each time we draw a molecule's Lewis structure (unless the question specifically asks you to do so). You just have to know that some structures have multiple bonds in different equivalent locations meaning that they have resonance.

Meredithe DeGuzman4G
Posts: 78
Joined: Wed Sep 18, 2019 12:20 am

Re: Resonance Structures

Postby Meredithe DeGuzman4G » Fri Oct 25, 2019 12:13 am

The Lewis structure isn't perfect & sometimes we're able to draw many Lewis structures for a molecule. This is called resonance. In this case, the molecule actually exists as a hybrid of all its resonance structures. And probably not, and he's said that he'll accept any correct structure.

Kelvin Chung 1C
Posts: 50
Joined: Sat Aug 24, 2019 12:15 am

Re: Resonance Structures

Postby Kelvin Chung 1C » Fri Oct 25, 2019 5:31 am

Dr. Lavelle showed us in class that the molecule most likely exists as a hybrid of the resonance structures by comparing the typical bond length between two atoms to the bond length between the same two atoms within a molecule. The difference in the bond lengths proves that the molecule's bonds are a "hybrid" of a double-bond and a single-bond.

Siya Shah 1J
Posts: 50
Joined: Sat Aug 17, 2019 12:15 am

Re: Resonance Structures

Postby Siya Shah 1J » Fri Oct 25, 2019 8:37 am

Resonance structures are essentially all the ways one molecule can be represented using a Lewis structure. The real molecule that exists is actually a blend of all the possible structures. I think most likely you would be required to always consider resonance and draw as many structures as you can.


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