Showing resonance

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emaad_3H
Posts: 51
Joined: Thu Jul 11, 2019 12:17 am

Showing resonance

Postby emaad_3H » Sun Nov 03, 2019 9:01 pm

Is there a way that we are supposed to show whether a compound has resonance? Are we supposed to do the double arrow?

Anna Chen 1K
Posts: 104
Joined: Thu Jul 25, 2019 12:18 am

Re: Showing resonance

Postby Anna Chen 1K » Sun Nov 03, 2019 9:03 pm

Yes, you can use the double arrows to draw a lewis structure's resonance structures.

405318478
Posts: 90
Joined: Sat Jul 20, 2019 12:16 am

Re: Showing resonance

Postby 405318478 » Sun Nov 03, 2019 9:04 pm

I would either write out all resonance structures, or, if all resonances structures contribute equally to the hybrid, draw the solid and double lines in one structure.

Martina
Posts: 111
Joined: Thu Jul 25, 2019 12:16 am

Re: Showing resonance

Postby Martina » Sun Nov 03, 2019 9:49 pm

You can use the solid and dashed lines or you can draw all of the possible lewis structures and explain that the resonance is a hybrid of all of them.

Daniel Yu 1E
Posts: 100
Joined: Sat Aug 24, 2019 12:15 am

Re: Showing resonance

Postby Daniel Yu 1E » Sun Nov 03, 2019 10:06 pm

What about drawing like curves and circles? I've seen those on the internet.

Eesha Sohail 1D
Posts: 100
Joined: Sat Aug 17, 2019 12:16 am

Re: Showing resonance

Postby Eesha Sohail 1D » Sun Nov 03, 2019 10:56 pm

Can you elaborate on what that would look like? Maybe with a link. It sounds fine to me, but doesn't hurt to check.

Fdonovan 3D
Posts: 101
Joined: Sat Aug 17, 2019 12:16 am

Re: Showing resonance

Postby Fdonovan 3D » Sun Nov 03, 2019 11:03 pm

I think that if they ask us for it we can just draw multiple variations of the molecule. So if it was O-N=O and they said draw the resonance structure you would just do O=N-O (this is missing the lone pairs of course!)

Lauren Sanchez 3D
Posts: 52
Joined: Sat Aug 24, 2019 12:17 am

Re: Showing resonance

Postby Lauren Sanchez 3D » Sun Nov 03, 2019 11:09 pm

What about the example where we just drew a pentagon with a circle in the middle? Could that work?

EricZhao3G
Posts: 51
Joined: Tue Oct 08, 2019 12:16 am

Re: Showing resonance

Postby EricZhao3G » Mon Nov 04, 2019 1:48 pm

You would show resonance by drawing all of the possible Lewis diagrams with the lowest formal charges for the molecule and then by drawing a double-ended arrow between the structures. The double-ended arrow shows resonance between the structures.


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