《化学笔记》woodywood

3、Structral isomers

　　Structural isomers have the same molecular formula but a different structural formula. they normally have similar chemical properties but their physical properties may be slightly different.

　　For example,
　　pentane, 2-methylbutane and 2,2-dimethylpropane
　　3 structural isomers of pentane.

　　Naming structural isomers:
　　The naming system is known as the IUPAC system.