| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| Using mass spectrometry, neon was the first element shown to exist in more than one of these stable variations | an isotope | $800 | DJ | SUCH GREAT CHEMISTRY | 2022-07-07 | #8679 | |
| It's 1 or 2 or more atoms of the same element that differ in atomic weight | an isotope | $500 | J | CHEMISTRY | 1997-01-29 | #2863 |