What do the numbers in compound names like 1,4-diaminobenzene mean?
In: Chemistry
Chemical names are often instructons on how to draw a molecule. The numbers tell you on which position (carbon atom) atoms or groups of atoms are attached to.
In your example, there are 6 carbon atoms forming a hexagon. 1,4 means that the next group (here the *amino* group consisting of one nitrogen and two hydrogens) is not at the next carbon(that would be 1,2) , not at the one after that either(that would be 1,3) , but on the one after after that.
So it looks like this: [https://en.wikipedia.org/wiki/P-Phenylenediamine](https://en.wikipedia.org/wiki/P-Phenylenediamine)
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