# Number of Sigma Bonds in this Structure Containing a Ring [closed]

(This question was on my last gen. chemistry exam.)

I counted 12 sigma bonds, but the answer was 13. I'm taking this course online so there is no explanation given. Could anyone offer a quick explanation on how this structure could give 13 sigma bonds?

## closed as off-topic by airhuff, Todd Minehardt, M.A.R. ಠ_ಠ, NotEvans., ronDec 3 '17 at 14:58

This question appears to be off-topic. The users who voted to close gave this specific reason:

If this question can be reworded to fit the rules in the help center, please edit the question.

• Welcome to chemistry.SE! If you have any questions about the policies of our community, please ‎visit the help center. – airhuff Dec 2 '17 at 19:38
• You might also want to give the site's homework policy a read. In this particular post, simply counting the number of bonds would suffice as "effort" IMHO (I don't see what more could be done). Do bear in mind though, that homework-type questions (posted without any effort taken towards solving it) tend to get closed. Welcome to Chemistry.SE, cheers! :-) – paracetamol Dec 2 '17 at 20:21
• The simple answer is that all bonds (in this molecule) contain $\sigma$ orbitals but a few also contain $\pi$ orbitals! – Gert Dec 2 '17 at 20:35