Resonance

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Tracey Tran 3I
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Joined: Thu Jul 11, 2019 12:16 am

Resonance

Postby Tracey Tran 3I » Wed Oct 23, 2019 9:16 pm

Why are compounds with resonance considered more stable?

EmilyJoo_1G
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Joined: Thu Jul 25, 2019 12:16 am

Re: Resonance

Postby EmilyJoo_1G » Wed Oct 23, 2019 9:22 pm

Compounds with resonance have greater stability because they have delocalized electrons that occupy a greater volume.

Arvind 4G
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Re: Resonance

Postby Arvind 4G » Thu Oct 24, 2019 12:24 am

Their electrons are very mobile and delocalized which gives them stability.

Jingyao Chen 4H
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Re: Resonance

Postby Jingyao Chen 4H » Thu Oct 24, 2019 9:15 pm

Because electrons occupy greater volume, which means less repulsions, and therefore more stability.

005206171
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Joined: Wed Sep 18, 2019 12:20 am

Re: Resonance

Postby 005206171 » Fri Oct 25, 2019 12:36 am

When molecules have resonance their e- exist in a hybrid of their lewis structures. Their e- can make those bonds (delocalized) to lower their repulsion. The result is a more stable atom. A molecule with more Lewis structures is more stable.

andrewcj 2C
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Re: Resonance

Postby andrewcj 2C » Fri Oct 25, 2019 12:46 am

Another way to look at this (I think) is to look at bond order. If a molecule has resonance, its bond order will be higher than a molecule with only single bonds. In other words, its "average" bond strength will be in between that of a single bond and a double bond, and since multiple bonds are more stable than single bonds, the molecule with an "average" bond strength higher than a single bond will be more stable than a molecule that only has single bonds.

rachel liu 3k
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Re: Resonance

Postby rachel liu 3k » Fri Oct 25, 2019 9:12 am

Are we expected to draw all the resonance structures of compounds various bond lengths (no3-) when asked for a lewis structure?

DLee_1L
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Re: Resonance

Postby DLee_1L » Fri Oct 25, 2019 11:14 am

I believe so, but it won't be too hard since all the resonance structures would be exactly the same just with a double or triple bond in a different place.

405335722
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Joined: Fri Aug 30, 2019 12:16 am

Re: Resonance

Postby 405335722 » Fri Oct 25, 2019 11:14 am

Their delocalized electrons also give them a lower activation energy which makes them more stable.

Miriam Villarreal 1J
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Re: Resonance

Postby Miriam Villarreal 1J » Fri Oct 25, 2019 11:36 am

Since Resonance structures lie on the fact that a molecule is able to have two or more valid electron dot structures. therefore in calculating the average (hybrid) of the structures, it will be more stable compared to a single bond.

Jillian C 4C
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Re: Resonance

Postby Jillian C 4C » Sat Oct 26, 2019 5:32 pm

Compounds with resonance involve delocalized electrons, leading to fewer repulsions and more stability.

Tahlia Mullins
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Re: Resonance

Postby Tahlia Mullins » Sat Oct 26, 2019 11:22 pm

Compounds with resonance are more stable because their electrons are delocalized, or more mobile, which leads to a lower overall energy since the electrons occupy a greater volume.

Megan Ngai- 3B
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Joined: Fri Aug 09, 2019 12:17 am

Re: Resonance

Postby Megan Ngai- 3B » Sun Oct 27, 2019 12:47 am

Resonance involves delocalized electrons. That means fewer repulsions and more stability with a larger volume.


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