bond lengths

[Lea Ozdere 2G]

Out of curiosity, I was wondering if a double bond length is always .20A shorter than a single bond length. I was looking through my notes for Lewis structures and resonance and I noticed that in both examples Dr. Lavelle used, the double bond length was .20A shorter than the single bond. For example in NO3 the double bond is 1.20A and the single bond is 1.4A and for benzene the double bond is 1.34A and for the single bond it is 1.54A.

[Faith St Amant 3D]

That's an interesting observation, but I think it's just a coincidence. Bond lengths vary depending on the size of the atoms that are bonded together, so I wouldn't expect there to be any concrete pattern to the difference in bond lengths.

[Renny_kim_2G]

There are a lot of factors aside from the number of bonds that determine bond length, so it is hard to say or apply that for every case.

[Bella Bursulaya 3G]

I don't think so, because that might just be a coincidence, but an interesting observation! I don't think that things fit that nicely in reality however.

[Kaitlyn Hernandez 3I]

I don't believe that it'll always be that specific in every situation, but I'd just try to always remember that in order of increasing length, bond lengths are: triple bonds < double bonds < single bonds.

[Namratha Gujje]

The bond lengths are not the same length in every molecule with a double bond. The lengths vary per molecule. There are a lot of factors that determine the lengths of the bonds.

[Michelle Nguyen 3F]

I think lengths just vary depending on the molecule, but that is an interesting coincidence!

[Jose Miguel Conste 3H]

it's just a coincidence, not necessarily specific, just know that double is shorter than single and triple is shorter than double

[Andrew Dao 3C]

Yeah definitely a coincidence as bond lengths heavily depend on the size of the atoms bonding.

[Jordan_OBrien_2k]

I'm not sure if this correct or not but I think that there are other factors that affect bond length such as which elements the bond is between

[Lesly Lopez 3A]

Hi,

You could say that but it is not always. There are a lot of factors aside from the number of bonds that determine bond length, so it is hard to say or apply that for every case.