Simple Alkanes Simple Alkanes Methane is the simplest alkane. It is made from one carbon atom bonded to four hydrogen atoms. Ethane is the next simplest alkane. It is formed from two carbon atoms bound to each other by a single bond. Propane is made from three carbons and eight hydrogens Butane is formed from four carbons and ten hydrogens.
Butane is the first alkane to have isomers.