How many sigma and pi bonds are in propene?

Aug 5, 2017

1 pi and 8 sigma bonds.

Explanation:

• 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):

${\text{H"_3"C"-stackrel("H")stackrel(|)("C")="CH}}_{2}$

...we have 1 double and 6 single bonds (counting both $\text{C"-"H}$ and $\text{C"-"C}$ bonds).

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