Rotation

[Daniel Hernandez 1G]

If an area of electron density contains a pi bond, is it safe to assume that there are at least two bonds present in the particular area?

[ColmConnolly3D]

Yes I would say that that makes sense

[Andreas Krumbein 1L]

Yes, a pi bond can only happen when there is a double or triple bond present between two atoms. Likewise, if there is only a single bond, then you can assume that the bond is a sigma bond.

[Lauren Sarigumba 1K]

A single bond is a sigma bond. A double bond is a sigma and a pi bond. A triple bond is a sigma and two pi bonds.

[Jason_Glass_2L]

Yes because Pi bonds are only seen in double and triple bonds, where a double bond has 1 pi bond and a triple bond has 2 pi bonds.

[Muskaan Abdul-Sattar]

Yes. A sigma bond is present in a single bond while a double bond has a sigma and pi bond. A triple bond has a sigma and two pi bonds.

[105618850]

Yes, for a pi bond to be present there must be multiple bonds between two atoms.

[Charlotte Adams 1A]

If a a pi bond is present that means that a sigma bond is also present.

[NayeliPlayas_1L]

If there is a pi bond, then a sigma bond must be present. I believe there is always a pi bond and sigma bond when there is a double bond or more than a double bond present. Correct me if I'm wrong.

[Nancy Yao]

Write it in a straightforward way:

single bond = sigma-bond
double bond = sigma-bond + pi-bond
triple bond = sigma-bond + 2 pi-bonds

[Binyu You]

Yes, I think so. A single bond only contains sigma bond; a double bond has one sigma and one pi bond. A triple bond has a sigma and two pi bonds.

[George_Yin_3I]

Yes, if there is a pi bond present, there will at least a double bond or bond with greater strength present.

[DPatel_2L]

Yes that would make the most sense.

[CesarLec1]

Yes, as long as you know there is one pi bond and not just pi bonds then I think it is safe to assume its at least a double bond.

[Rio Gagnon 1G]

Yes because a pi bond is only seen in double and triple bond.

[Emily Wu 2G]

Is this going to be on the test? I don't remember learning about this..

[Megan Cai 1H]

Yes because in order to have a pi bond, you need to have one sigma bond. For example, a double bond has one sigma bond and one pi bond and a triple bond has one sigma bond and two pi bonds. You won't have only one pi bond.