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Sigma Bond and Pi Bond

The molecular...

Question

The molecular formula of the first member of the family of alkenynes and its name is given by the set:

C_{3} H_{2}

, alkene

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C_{5} H_{6}

, pent-1-en-3-yne

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C_{6} H_{6}

, hex-1-en-5-yne

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C_{4} H_{4}

, butenyne

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Solution

The correct option is D $C_{4} H_{4}$ , butenyne
Alkenynes contain a double bond and a triple bond. So, they must have at least four carbon atoms.

The first member of the family of alkenynes is butenyne. Its molecular formula is $C_{4} H_{4}$ .

Therefore, the option is D.

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{C H}_{3} - C H = C H - C \equiv C - H

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