Which of the following is an example of a compound with a ring structure?
Cyclohexane
Hydrocarbons can have open chains of carbon atoms or closed rings. Saturated hydrocarbons whose carbon atoms form a closed ring are called cycloalkanes, and their names begin with the prefix cyclo-.
Cyclohexane, C6H12, has six carbon atoms joined by single bonds into a closed ring, each carbon carrying two hydrogen atoms. So it is a compound with a ring structure.
Butane (C4H10) and propane (C3H8) are open-chain alkanes whose carbon atoms are joined in a straight chain, and methane (CH4) has only one carbon atom, so it cannot form a ring at all.
Hence, Cyclohexane.
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