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The 5\(^{th}\) member of an alkyne series is 

Chemistry
JAMB 2025

The 5\(^{th}\) member of an alkyne series is 

  • A. C\(_5\)H\(_8\)
  • B. C\(_5\)H\(_{10}\)
  • C. C\(_6\)H\(_{12}\)
  • D. C\(_6\)H\(_{10}\)
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Correct Answer: Option D
Explanation

The general formula for the alkyne homologous series is C\(_n\)H\(_{2n−2}\), where n is the number of carbon atoms. The first member of the series has n=2 (ethyne), as a minimum of two carbon atoms is required for a triple bond. 

The 5th member of the alkyne series is hexyne (C\(_6\)H\(_{10}\)). 

There is an explanation video available below.


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Explanation Video

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