Carbon.
The Big Bang Theory Season 12, Episode 23
I don't know. How do CARBON atoms
form a benzene ring?
The Big Bang Theory Season 2, Episode 13
Not lima beans. Carbon atoms.
The Big Bang Theory Season 3, Episode 14
Unit cell contains two CARBON atoms.
The Big Bang Theory Season 3, Episode 14
But just because
you've got some CARBON
The Big Bang Theory Season 5, Episode 12