Sigma And Pi Bonds
The number of σ and π bonds in ethyne (C₂H₂) are respectively:
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About This Question
- Subject
- chemistry
- Chapter
- chemical bonding and molecular structure
- Topic
- sigma and pi bonds
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
3 and 2
- Ethyne structure: H−C≡C−H
- Sigma (σ) bonds: Each single bond is a σ bond.
- 2 C−H bonds =2σ
- 1 C≡C triple bond contains 1σ bond.
- Total σ=2+1=3.
- Pi (π) bonds: A triple bond contains 2π bonds.
- Total π=2.
This medium difficulty chemistry question is from the chapter chemical bonding and molecular structure, covering the topic of sigma and pi bonds. It appeared in the 2025 exam.
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