MCAT Organic Chemistry Question 45: Answer and Explanation
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Question: 45
15. Compared to single bonds, triple bonds are:
- A. weaker.
- B. longer.
- C. made up of fewer π bonds.
- D. more rigid.
Correct Answer: D
Explanation:
π bonds do not permit free rotation, unlike σ bonds; this makes triple bonds more rigid than single bonds. Triple bonds are stronger and shorter bonds than single bonds, eliminating choices (A) and (B). Single bonds do not contain π bonds, while triple bonds have two π bonds in their makeup, eliminating choice (C).