MCAT Organic Chemistry Question 32: Answer and Explanation

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Question: 32

2. Which of the following compounds possesses at least one σ bond?

A. CH₄
B. C₂H₂
C. C₂H₄
D. All of the above contain at least one σ bond.

Correct Answer: D

Explanation:

All single bonds are σ bonds; double and triple bonds each contain one σ bond and one or two π bonds, respectively. The compounds CH₄, C₂H₂, and C₂H₄ all contain at least one single bond and therefore contain at least one σ bond.

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