Identify the unsaturated carbon compound from the following:
Correct: C
Unsaturated compounds contain carbon-carbon double or triple bonds. A) Propane (C3H8) is an alkane, saturated. B) Butane (C4H10) is an alkane, saturated. C) Ethene (C2H4) is an alkene, containing a carbon-carbon double bond, hence unsaturated. D) Methane (CH4) is an alkane, saturated.