How many sigma and pi bonds are in propene?

1 Answer


1 pi and 8 sigma bonds.


  • Every single bond contains 1 sigma bond and 0 pi bonds.
  • Every double or triple bond contains at least 1 sigma bond and rest are pi. So, there are 1 sigma and 1 pi in a double bond and 1 sigma and 2 pi in a triple bond.

In propene, which has a structure like this (ignore the angles):


...we have 1 double and 6 single bonds (counting both #"C"-"H"# and #"C"-"C"# bonds).

Therefore, there are 8 sigma bonds and 1 pi bond.