
stable super-heavy ELEMENT.
The Big Bang Theory Season 7, Episode 10

And that is
the most common ELEMENT
The Big Bang Theory Season 7, Episode 3

this ELEMENT by mistake.
The Big Bang Theory Season 7, Episode 10

for synthesizing a new stable
super-heavy ELEMENT?
The Big Bang Theory Season 7, Episode 6

is the ELEMENT of surprise.
The Big Bang Theory Season 7, Episode 12