Ethyne has a total of:
Correct answer: D. three sigma bonds, two pi bonds
- A. one sigma bond, two pi bonds
- B. one sigma bond, four pi bonds
- C. two sigma bonds, four pi bonds
- D. three sigma bonds, two pi bonds
Explanation
Hence ethyne has one sigma bond formed by carbon carbon over lapping and the other two sigma bonds are formed by carbon hydrogen overlapping while two pi bonds are formed by side to side overlapping of py and pz orbitals.
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About Sigma and Pi Bonds
A sigma bond forms by direct end-to-end overlap along the internuclear axis, whereas a pi bond forms by sideways overlap of parallel orbitals. The topic covers single, double and triple bonds, bond composition, restricted rotation and the relation between sigma and pi bonding and orbital hybridisation.
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