Why Are Double Bonds Shorter

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Mark 1D
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Joined: Fri Sep 28, 2018 12:18 am

Why Are Double Bonds Shorter

Postby Mark 1D » Sun Nov 25, 2018 8:01 pm

Howdy partners. What is the reasoning for why double bonds are shorter (and therefore stronger) than single bonds? Thanks

Diana Bibireata 1B
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Joined: Fri Sep 28, 2018 12:23 am

Re: Why Are Double Bonds Shorter

Postby Diana Bibireata 1B » Sun Nov 25, 2018 9:32 pm

Its because the additional bonding electrons in a double bond attract the nuclei more strongly and pull the atoms closer together.

Linh Vo 2J
Posts: 61
Joined: Sat Apr 28, 2018 3:00 am

Re: Why Are Double Bonds Shorter

Postby Linh Vo 2J » Sun Nov 25, 2018 9:36 pm

The textbook in section 2.16 page 83 says, "Multiple bonds are shorter than single bonds between the same two elements because the additional bonding electrons attract the nuclei more strongly and pull the atoms closer together.” This should help clarify your question!

Sapna Ramappa 1J
Posts: 63
Joined: Fri Sep 28, 2018 12:24 am

Re: Why Are Double Bonds Shorter

Postby Sapna Ramappa 1J » Mon Nov 26, 2018 5:58 pm

Double bonds would be shorter (and thus stronger) because there are more electrons that are bonding, and as a result, the atoms are pulled closer together.

cassidysong 1K
Posts: 100
Joined: Fri Aug 30, 2019 12:15 am

Re: Why Are Double Bonds Shorter

Postby cassidysong 1K » Sun Nov 03, 2019 9:56 pm

^^^ more electrons have more pull and make the bond shorter

Kaylee Clarke 1G
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Joined: Fri Aug 30, 2019 12:15 am

Re: Why Are Double Bonds Shorter

Postby Kaylee Clarke 1G » Sun Nov 03, 2019 10:01 pm

double bonds are shorter than single bonds, and triple bonds are shorter than single bonds because the greater number fo the bond the more closely is it attracted to the nucleus, decreasing the atomic radius.

205154661_Dis2J
Posts: 109
Joined: Wed Sep 18, 2019 12:21 am

Re: Why Are Double Bonds Shorter

Postby 205154661_Dis2J » Sun Nov 03, 2019 10:29 pm

Double bonds are shorter because the pull/attraction to the nucleus is greater than single bonds.

105311039
Posts: 107
Joined: Fri Aug 02, 2019 12:16 am

Re: Why Are Double Bonds Shorter

Postby 105311039 » Sun Nov 03, 2019 10:30 pm

Double bonds are closer because they have a stronger bond, so they pull the elements closer together.

605136321
Posts: 85
Joined: Wed Sep 18, 2019 12:19 am

Re: Why Are Double Bonds Shorter

Postby 605136321 » Sun Nov 03, 2019 10:31 pm

single bonds are longer because there is less attraction to the nuclei, whereas double bonds have a greater pull and thus are pulled closer making them shorter

sarahsalama2E
Posts: 164
Joined: Fri Aug 30, 2019 12:16 am

Re: Why Are Double Bonds Shorter

Postby sarahsalama2E » Sun Nov 03, 2019 10:33 pm

Should we also know the relative strengths of polar covalent vs non polar covalent forces

Joanne Lee 1J
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Joined: Thu Jul 25, 2019 12:15 am

Re: Why Are Double Bonds Shorter

Postby Joanne Lee 1J » Wed Nov 06, 2019 11:43 pm

Double bonds are shorter than single bonds because double bonds are stronger and therefore pull the electrons closer together in the two elements which decreases the length of the bond.

Vanessa Chuang 4F
Posts: 51
Joined: Sat Aug 24, 2019 12:18 am

Re: Why Are Double Bonds Shorter

Postby Vanessa Chuang 4F » Wed Nov 06, 2019 11:45 pm

For the midterm we just took, there was no need to really know the difference. But in the future for the next test and the final, we will have to know the difference between poplar covalent and non polar covalent forces as well as the differences in their strengths, characteristics, etc.

Jainam Shah 4I
Posts: 130
Joined: Fri Aug 30, 2019 12:16 am

Re: Why Are Double Bonds Shorter

Postby Jainam Shah 4I » Wed Nov 06, 2019 11:55 pm

There are more electrons involved in the bond hence there is a stronger attraction between the atoms. They are pulled closely so the length of the bond shortens compared to a single bond where only 2 electrons are being shared.

emma brinton_3B
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Joined: Fri Aug 09, 2019 12:17 am

Re: Why Are Double Bonds Shorter

Postby emma brinton_3B » Thu Nov 07, 2019 9:25 am

this is because with the addition of more electrons between the pairs, the pull of the two atoms together is stronger and thus shortens the length of the bond.

Juana Abana 1G
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Joined: Wed Sep 18, 2019 12:15 am

Re: Why Are Double Bonds Shorter

Postby Juana Abana 1G » Thu Nov 07, 2019 9:20 pm

Double bonds are shorter and stronger since the electrons between the two elements are pulled closer together.

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

Re: Why Are Double Bonds Shorter

Postby Lauren Sanchez 3D » Thu Nov 07, 2019 9:55 pm

So triple bonds pull the nuclei even closer then? Which then makes them even stronger than double bonds?

Daniel Honeychurch1C
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Joined: Thu Jul 11, 2019 12:15 am

Re: Why Are Double Bonds Shorter

Postby Daniel Honeychurch1C » Thu Nov 07, 2019 10:21 pm

Lauren Sanchez 3D wrote:So triple bonds pull the nuclei even closer then? Which then makes them even stronger than double bonds?


Yes, in triple bonds, there are 6 shared electrons which pulls the two atoms even closer than in double bonds which makes triple bonds stronger and harder to break (more energy is needed).


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