Methane - CH4, Ethane - C2H6, Propene - C3H6, Butane - C4H10, Butene - C4H8, Pentene - C5H10, Pentane - C5H12, Octane - C8H18, Octene - C8H16, Nonane - C9H20,

Match up - alkane and alkene

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