It's the ATOMIC number for technetium.
The Big Bang Theory Season 6, Episode 8
If you multiply that
by the ATOMIC number of "N"--
The Big Bang Theory Season 7, Episode 3
And she found ATOMIC spectroscopy boring.
I wouldn't coitus her with your genitals.
The Big Bang Theory Season 9, Episode 8
on ATOMIC spectroscopy
when I came across your ad.
The Big Bang Theory Season 9, Episode 8
you get 14, which is
the ATOMIC number of...?
The Big Bang Theory Season 7, Episode 3