Chemistrymedium · Past Paper
How many sigma and pi bonds are there in an ethyne molecule?
A1 sigma, 2 pi
B2 sigma, 1 pi
C3 sigma, 2 pi
D2 sigma, 2 pi
✓ Correct Answer: C — 3 sigma, 2 pi
In ethyne (H-C#C-H), there are 2 C-H sigma bonds, 1 C-C sigma bond, and 2 C-C pi bonds, totaling 3 sigma and 2 pi bonds.
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