Organic molecules that have the suffix-ene are unsaturated hydrocarbons that have

Answer Details

Organic molecules with the suffix -ene are unsaturated hydrocarbons that have a double bond between two of their carbon atoms. This means that each carbon atom is bonded to two other atoms instead of four, which results in the molecule having fewer hydrogen atoms than a saturated hydrocarbon with the same number of carbon atoms. The double bond between the carbon atoms is what distinguishes -ene molecules from saturated hydrocarbons that have only single bonds. Therefore, the correct answer is: "a double bond".