So far, no one has gotten this correct. I’ll diagram on here as best I can.
C – C = C – C=O
So i put the carbons up there with the double bonds. We have two double bonds, one between two carbons and one between a carbon and an oxygen.
The first carbon also has 3 H’s on it,
Second has 1 H
Third has 1 H
and the Fourth carbon also has an -O-H on it.
Remember each double bond also has a sigma bond in it.
There are 11 sigma bonds and 2 Pi bonds.Source(s): My M.S. in Chemistry
There are 11 sigma bonds and 2 Pi bonds.
The simplest way to figure this one out would be to draw the Lewis structure for your molecule there. Every single bond is a sigma bond. As for double and triple bonds, each bond beyond the first is a pi bond.
My answer is 9 sigma bond, 3 pi bondsSource(s): Myself and some piece of paper with the diagram
Sigma bonds are single bonds and pi bonds are double bonds.
So 11 sigma bonds and 2 pi bonds