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Bond lengths

Posted: Sun Oct 13, 2019 11:10 am
by NicoJones_1B
If not given the particular bond length between two molecules, is there a way to find out the bond length?

Re: Bond lengths

Posted: Sun Oct 13, 2019 11:13 am
by DarrenKim_1H
Not sure if you can, but when you do I believe it is the sum of the radii. Here's a link for the radii lengths of different atoms:

https://chem.libretexts.org/Ancillary_M ... lent_Radii

Re: Bond lengths

Posted: Sun Oct 13, 2019 11:14 am
by Mariepahos4D
Bond lengths are accepted values that were experimentally obtained, so we would have to be given them as there is no equation to figure out a bond length

Re: Bond lengths

Posted: Sun Oct 13, 2019 11:41 am
by Wendy 1E
I believe that Dr. Lavelle mentioned this once in his lectures. A bond length between two molecules is about 10^-10m, which is equal to 1 Angstrom.

Re: Bond lengths

Posted: Sun Oct 13, 2019 12:38 pm
by abby hyman
Wendy Perez 3A wrote:I believe that Dr. Lavelle mentioned this once in his lectures. A bond length between two molecules is about 10^-10m, which is equal to 1 Angstrom.


Yes, this is correct. A bond length is always equal to 1 angstrom

Re: Bond lengths

Posted: Thu Oct 24, 2019 4:10 pm
by Maia_Jackson_2C
Then if the bond length is always the same why is it important?

Re: Bond lengths

Posted: Thu Oct 24, 2019 4:57 pm
by Claire Grover 3G
I believe we would be given this!

Re: Bond lengths

Posted: Fri Oct 25, 2019 12:18 am
by Debora Fernandez Clemente_ 4H
would the bond length vary when it is a double or triple bond?

Re: Bond lengths

Posted: Fri Oct 25, 2019 1:05 am
by andrewcj 2C
Debora Fernandez Clemente_ 4H wrote:would the bond length vary when it is a double or triple bond?

Yes! Multiple bonds will be shorter than single bonds.

Re: Bond lengths

Posted: Fri Oct 25, 2019 5:39 am
by Kelvin Chung 1C
andrewcj 4I wrote:
Debora Fernandez Clemente_ 4H wrote:would the bond length vary when it is a double or triple bond?

Yes! Multiple bonds will be shorter than single bonds.

For example, because a double bond is stronger than a single bond, the double bond's length will be relatively shorter since the atoms are pulled together with more strength.

Re: Bond lengths

Posted: Fri Oct 25, 2019 8:44 am
by Destiny_Ryales_3J
How could there be any variance in bond length if it’s always one angstrom?

Re: Bond lengths

Posted: Mon Oct 28, 2019 12:11 pm
by 005162902
Bond lengths equal one Angstrom, and will lively be given. However, double bonds will be shorter than single bonds a lot of the time because they have a stronger pull between molecules, likely pulling them closer together and requiring a shorter bond.

Re: Bond lengths

Posted: Mon Oct 28, 2019 1:16 pm
by Katie Bart 1I
Are double bonds always shorter than single bonds? Are there any exceptions?

Re: Bond lengths

Posted: Tue Oct 29, 2019 4:52 pm
by Maya Pakulski 1D
Are bond lengths different for each molecule or are they always the same length?

Re: Bond lengths

Posted: Tue Oct 29, 2019 5:47 pm
by VioletKo3F
Does anyone know that actual length of double and triple bonds? Will we need to know this on the tests?

Re: Bond lengths

Posted: Wed Oct 30, 2019 12:06 am
by Omar Selim 1D
There's no formula but there are very specific lengths for certain bonds that I doubt will be expected knowledge to know on the test