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Single bond vs double bond

Posted: Sun Oct 27, 2019 7:34 pm
by Tracy Tolentino_2E
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?

Re: Single bond vs double bond

Posted: Sun Oct 27, 2019 7:36 pm
by JonathanS 1H
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.

Re: Single bond vs double bond

Posted: Sun Oct 27, 2019 7:38 pm
by April Meza 3K
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.

Re: Single bond vs double bond

Posted: Sun Oct 27, 2019 7:56 pm
by J Medina 2I
These numbers are the length of each bond. The double bonds are shorter because there is a stronger pull there which makes it tighter.

Re: Single bond vs double bond

Posted: Sun Oct 27, 2019 8:20 pm
by pJimenez3F
the length of the bonds single bonds are longer since they are not as strong as double bonds

Re: Single bond vs double bond

Posted: Mon Oct 28, 2019 12:15 pm
by 005162902
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.

Re: Single bond vs double bond

Posted: Mon Oct 28, 2019 1:20 pm
by 105335337
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.

Re: Single bond vs double bond

Posted: Thu Oct 31, 2019 3:08 pm
by Anvi Brahmbhatt 4A
The numbers describe the length of each bond. Double bonds are shorter than single bonds, and triple bonds are shorter than double bonds.

Re: Single bond vs double bond

Posted: Fri Nov 01, 2019 12:29 pm
by ABombino_2J
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.

Re: Single bond vs double bond

Posted: Fri Nov 01, 2019 8:56 pm
by 805097738
double bonds are stronger, making their bond length shorter as the atoms are pulled closer together

Re: Single bond vs double bond

Posted: Sat Nov 02, 2019 10:35 am
by Merin Padayatty 3G
The Angstrom is the unit that describes bond length. A double bond has a shorter bond length than a single bond.

Re: Single bond vs double bond

Posted: Sat Nov 02, 2019 5:07 pm
by PriscillaLi_3G
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.

Re: Single bond vs double bond

Posted: Sat Nov 02, 2019 5:30 pm
by Michelle Xie 2B
The numbers are the bond length between the carbon atoms.

Re: Single bond vs double bond

Posted: Sun Nov 03, 2019 5:56 pm
by pJimenez3F
the length of the bonds single bonds are longer since they are not as strong as double bonds

Re: Single bond vs double bond

Posted: Sun Nov 03, 2019 10:08 pm
by Natalie C 1K
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