It's the ATOMIC number for technetium.
The Big Bang Theory Season 6, Episode 8
a woman is dividing the ATOMIC weight
of the best noble gas
The Big Bang Theory Season 9, Episode 8
Now, if you'll excuse me,
the father of the ATOMIC bomb...
The Big Bang Theory Season 4, Episode 3
My watch is linked to the ATOMIC clock
in Boulder, Colorado.
The Big Bang Theory Season 1, Episode 10
you get 14, which is
the ATOMIC number of...?
The Big Bang Theory Season 7, Episode 3