Which suffix is used for alkenes with a single carbon–carbon double bond?

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Multiple Choice

Which suffix is used for alkenes with a single carbon–carbon double bond?

Explanation:
Naming alkenes uses a suffix that signals a carbon–carbon double bond. The ending -ene indicates the presence of one C=C bond, as in simple alkenes like ethene and propene. The form shown as En in the options represents that -ene ending, so it fits best for a mono-alkene. The other options describe different types of unsaturation: diene would imply two double bonds, yne a triple bond, and an indicates only single bonds (alkanes).

Naming alkenes uses a suffix that signals a carbon–carbon double bond. The ending -ene indicates the presence of one C=C bond, as in simple alkenes like ethene and propene. The form shown as En in the options represents that -ene ending, so it fits best for a mono-alkene. The other options describe different types of unsaturation: diene would imply two double bonds, yne a triple bond, and an indicates only single bonds (alkanes).

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