The molecular formula of the first member of alkenynes and its name is given by the set :
A
C3H2, Alkene
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B
C5H6, Pent-1-en-3-yne
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C
C6H8, Hex-1-en-5-yne
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D
C4H4, But-1-en-3-yne
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Solution
The correct option is DC4H4, But-1-en-3-yne Alkenynes contain a double bond and a triple bond. The first member of the family of alkenynes is butenyne. Its molecular formula is C4H4.