Resonance Structures  [ENDORSED]

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Cytlalli 1B
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Joined: Fri Apr 06, 2018 11:02 am

Resonance Structures

Postby Cytlalli 1B » Thu May 17, 2018 7:23 pm

How do you make sure that you have found all the resonance structures possible or is it just through trial and error?

Posts: 31
Joined: Fri Apr 06, 2018 11:03 am

Re: Resonance Structures

Postby joannehaddad » Fri May 18, 2018 1:12 pm

I would believe it's through trial and error. But usually, the quickest way to do it in my opinion is to see what is different. For example, if you're drawing a lewis structure for something bonded to 4 oxygens, with 1 single bond and 3 double bonds to oxygen), and so the resonance structures would be changing the oxygen that has the single bond. You know it can have 4 possible positions, and so you would have 4 resonant structures (one for each oxygen).

Jennifer 1G
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Joined: Wed Nov 15, 2017 3:03 am

Re: Resonance Structures

Postby Jennifer 1G » Fri May 18, 2018 8:30 pm

I think it was mentioned that in exams our final answer has to be the one with less formal charge/most stable, so that's something to keep in mind!

Samantha Draghi 1L
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Joined: Fri Apr 06, 2018 11:02 am

Re: Resonance Structures

Postby Samantha Draghi 1L » Sat May 19, 2018 12:45 pm

I was confused about this too. I also was wondering if there are resonance structures are there a certain amount? and how do you know?

Jacob Samuels 1E
Posts: 30
Joined: Fri Apr 06, 2018 11:05 am

Re: Resonance Structures  [ENDORSED]

Postby Jacob Samuels 1E » Sat May 19, 2018 1:12 pm

An easy way to figure out all the resonance structures is just be “spinning” the bonded atoms around the center atom until it is back in its original position.

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