
I don't know. How do CARBON atoms
form a benzene ring?
The Big Bang Theory Season 2, Episode 13

...while I build CARBON atoms.
The Big Bang Theory Season 3, Episode 14

and come home with
sacks full of CARBON
The Big Bang Theory Season 5, Episode 12

Carbon.
The Big Bang Theory Season 12, Episode 23

Diamonds, crystallized CARBON.
The Big Bang Theory Season 5, Episode 12