Carbon Jokes

Are you a carbon sample? Because I want to date you.
What do chemists call a benzene ring with iron atoms replacing the carbon atoms?
A ferrous wheel.
What do geologists call a benzene ring with iron atoms replacing the carbon atoms? A ferrous wheel.
What is the the chemical formulation for candy molecules? Carbon, Holmium, Cobalt, Lanthanum, Tellerium—or ChoCoLaTe.
What do you call a benzene ring where the iron atoms replacing all of the carbon atoms? A ferrous wheel.
What do you call a benzene ring where the iron atoms replacing all of the carbon atoms?
A ferrous wheel.