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The IUPAC name of the compound having the formula is:

  1. A
    -butyn- -ene
  2. B
    but- -yne- -ene
  3. C
    -butene- -yne
  4. D
    -butene- -yne

Solution & Step-by-step Explanation

When a compound contains both a double and a triple bond, the chain is numbered from the end that gives lower locants to the unsaturation. If there is a tie, the double bond gets the lower number.Here, numbering from right gives locants (ene) and (yne).Name: But- -en- -yne (or -butene- -yne).

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The IUPAC name of the compound having the formula is:
A
-butyn- -ene
B
but- -yne- -ene
C
-butene- -yne
D
-butene- -yne

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Organic ChemistryIUPAC Nomenclature

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