What is a structural isomer and what are some examples?

Answer 1

In structural isomers, the atoms and functional groups are joined together in different ways.

Text definition:

Two or more substances composed of the same elements with the same proportions but differ in properties due to different arrangements of atoms.

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First of all in organic chemistry you are always dealing with a string of Carbon atoms and an isomer both samples have the same amount of carbon atoms but have a different molecular structure an example would be Pentane and 2-Methyl Butane.