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