Single bond vs double bond

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Tracy Tolentino_2E
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Single bond vs double bond

Postby Tracy Tolentino_2E » Sun Oct 27, 2019 7:34 pm

So during the lecture on Friday, Professor Lavelle drew the structures of Benzene and I was wondering what he meant when he wrote 1.34 Angstroms next to a double bond between C-C, and1.54 Angstroms for a single bond. What do these numbers describe? And what does he mean that electrons in resonance structures are delocalized?

JonathanS 1H
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Re: Single bond vs double bond

Postby JonathanS 1H » Sun Oct 27, 2019 7:36 pm

These numbers represent the observed length of each bond. The delocalization of e- means that the e- is not around one specific atom, but around the entire molecule as a whole.

April Meza 3K
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Re: Single bond vs double bond

Postby April Meza 3K » Sun Oct 27, 2019 7:38 pm

I believe the numbers represent the length of the bonds. As for delocalized electrons, that means that electrons in a molecule are not associated with a single atom or covalent bond.

J Medina 2I
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Re: Single bond vs double bond

Postby J Medina 2I » Sun Oct 27, 2019 7:56 pm

These numbers are the length of each bond. The double bonds are shorter because there is a stronger pull there which makes it tighter.

pJimenez3F
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Re: Single bond vs double bond

Postby pJimenez3F » Sun Oct 27, 2019 8:20 pm

the length of the bonds single bonds are longer since they are not as strong as double bonds

005162902
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Re: Single bond vs double bond

Postby 005162902 » Mon Oct 28, 2019 12:15 pm

The numbers present in his diagrams were the lengths of the bonds on the molecule. The double bonds had a lower Angstrom value because they are stronger bonds resulting in a stronger pull between molecules. The stronger pull positions them closer together and requires a smaller bond between the molecules, hence the differing Angstrom values between double and single bonds in his example.

105335337
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Re: Single bond vs double bond

Postby 105335337 » Mon Oct 28, 2019 1:20 pm

These are the lengths of both bonds. The double bond is shorter than the single bond because double bonds are stronger, holding the two atoms closer together, decreasing the distance.

Anvi Brahmbhatt 4A
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Re: Single bond vs double bond

Postby Anvi Brahmbhatt 4A » Thu Oct 31, 2019 3:08 pm

The numbers describe the length of each bond. Double bonds are shorter than single bonds, and triple bonds are shorter than double bonds.

ABombino_2J
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Re: Single bond vs double bond

Postby ABombino_2J » Fri Nov 01, 2019 12:29 pm

The double bonds are shorter than the single bonds because the extra e- creates more attractions between 2 elements. However, for benzene there are not true single or double bonds. Benzene actually has delocalized bonds, so rather than drawing a hexagon with alternating double bonds, the actually structure is a hexagon with a circle inside to show the delocalization.

805097738
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Re: Single bond vs double bond

Postby 805097738 » Fri Nov 01, 2019 8:56 pm

double bonds are stronger, making their bond length shorter as the atoms are pulled closer together

Merin Padayatty 3G
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Re: Single bond vs double bond

Postby Merin Padayatty 3G » Sat Nov 02, 2019 10:35 am

The Angstrom is the unit that describes bond length. A double bond has a shorter bond length than a single bond.

PriscillaLi_3G
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Re: Single bond vs double bond

Postby PriscillaLi_3G » Sat Nov 02, 2019 5:07 pm

Angstrom is a unit of length, so the numbers represent the bond length between the two atoms. I believe the reason Professor Lavelle cared to specify the lengths of the bonds is to show that single bonds are longer than double bonds.

Michelle Xie 2B
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Re: Single bond vs double bond

Postby Michelle Xie 2B » Sat Nov 02, 2019 5:30 pm

The numbers are the bond length between the carbon atoms.

pJimenez3F
Posts: 45
Joined: Wed Sep 18, 2019 12:18 am

Re: Single bond vs double bond

Postby pJimenez3F » Sun Nov 03, 2019 5:56 pm

the length of the bonds single bonds are longer since they are not as strong as double bonds

Natalie C 1K
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Re: Single bond vs double bond

Postby Natalie C 1K » Sun Nov 03, 2019 10:08 pm

the numbers are the bond length, which is measured in Angstroms. Double bonds are shorter than single bonds which is why the bond length for the double bond was less (shorter) than the length for the single bond


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