Yes
Types of structural isomerism Chain isomerism These isomers arise because of the possibility of branching in carbon chains. For example, there are two isomers of butane, C4H10. In one of them, the carbon atoms lie in a straight chain whereas in the other the chain is branched. Notice that isobutane has the same molecular formula, C 4 H 10, as n-butane but has a different structural formula. Two different molecules which have the same molecular formula are isomers. Isomers which differ in the connectivity of bonds are constitutional isomers, or structural isomers. Isobutane is a constitutional isomer of n-butane. The prefix iso indicates that branches off of the central carbon are equivalent. Figure %: The constitutional isomers butane and isobutane. In this variety of structural isomerism, the isomers contain different functional groups-that is, they belong to different families of compounds (different homologous series). For example, a molecular formula C 3 H 6 O could be either propanal (an aldehyde) or propanone (a ketone). Geometric Isomers. Isomers are molecules with the same Molecular Formula, but different structural formulas. Here's an example. Count the number of carbon, hydrogen, and oxygen atoms in this molecule and write its MOLECULAR FORMULA. Isomer 1 is the straight chain normal structure for butane (called n-butane). Isomer 2 (called 2-methylpropane) is a different structure with a branched chain which has a carbon* atom joined onto three other carbon atoms. The two isomers are different compounds with different boiling points. Be careful not to draw false isomers which are just twisted versions of the original molecule. For example, this structure is just the straight chain version of butane rotated about the central carbon-carbon bond. You could easily see this with a model. Different molecules with the same molecular formula are called isomers. The main purpose of this experiment is to acquaint you with the phenomenon of isomerism and help you learn how to determine when two molecules are the same and when they are different.
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does butane exhibit structural isomerism