| 2026-07-24 | Element whose name comes from the Greek for "inactive" |
| 2024-04-22 | Element whose name anagrams to GROAN |
| 2023-08-17 | Its atomic number is this clue's number divided by three |
| 2023-05-15 | Most abundant noble gas in the earth's atmosphere |
| 2023-03-16 | Neighbor of chlorine on the periodic table |
| 2022-11-08 | First noble gas, alphabetically |
| 2022-06-06 | Element suggested phonetically by NOPQ STUV ... |
| 2021-11-02 | Element below neon on the periodic table |
| 2021-10-06 | Its atomic number is 18 |
| 2021-05-25 | First noble gas to be discovered |
| 2020-01-21 | Fluorescent bulb filler |
| 2019-10-09 | Neighbor of krypton on the periodic table |
| 2019-08-09 | Most common noble gas |
| 2018-07-08 | Third-most abundant gas in the atmosphere |
| 2017-10-10 | This, on the periodic table |
| 2015-05-29 | Roughly 1% of the earth's atmosphere |
| 2013-08-28 | It lights up when it's excited |
| 2013-06-23 | Gas in a vacuum tube |
| 2012-08-23 | .93% of the earth's atmosphere |
| 2011-03-01 | Most common inert gas in the atmosphere |
| 2010-06-26 | Composition of some plasmas |
| 2008-01-03 | Element whose name roughly means "lazy" |
| 2007-10-07 | Vacuum tube filler |
| 2006-06-11 | Element whose name comes from Greek for "inactive" |
| 2005-12-14 | It's inert |
| 2005-02-21 | Laser gas |
| 2004-07-08 | Vacuum tube filler |
| 2004-05-20 | About 1% of the atmosphere |
| 2004-01-11 | About 1% of the Earth's atmosphere |
| 2003-10-06 | Inert gas |
| 2003-06-20 | About 1% of the atmosphere |
| 2002-10-20 | Fluorescent lamp filler |
| 2001-10-08 | Light bulb gas |
| 2000-10-19 | Part of the atmosphere |
| 1999-08-22 | About 1% of the atmosphere |
| 1999-01-08 | Number 18 |
| 1997-12-29 | Radio tube gas |
| 1997-11-16 | Vacuum tube filler |
| 1997-06-06 | Scientific discovery of 1894 |
| 1995-09-17 | Most common inert gas |
| 1995-08-01 | Inert gas |
| 1995-01-03 | Vacuum tube filler |
| 1994-07-01 | About 1% of the atmosphere |
| 1993-11-26 | Fluorescent-lamp filler |