Question

How do you name benzene rings?

Answer 1

It's hard to tell what you mean. You might mean one of the following:

To name A, it is a phenyl substituent.

To name B, it is a benzyl substituent.

C is called an n-acene. So, if there are four benzene rings in a row, it's called tetracene. If it's seven, then it's called heptacene, and so on.

D is a special type of compound called a periacene. This one is named based on the "armchairs" and "zigzags" it has. For this one, it's called (5a, 3z)-periacene since it has five rows of benzene rings, each having an armchair (`"\""_""/"`), and three zig zags (`hat" "`). But you probably don't have to know this.