| 2026-04-12 | Like krypton |
| 2026-01-17 | Not budging |
| 2025-12-19 | Like He and Xe |
| 2025-11-15 | Dormant |
| 2025-09-05 | Not going anywhere |
| 2025-05-30 | Unlikely to react |
| 2025-05-13 | Like noble gases |
| 2025-04-19 | Like helium |
| 2024-12-10 | Not chemically reactive |
| 2024-05-08 | Like argon |
| 2024-03-31 | Like neon |
| 2024-03-28 | Not quick to react |
| 2024-03-11 | Unreactive |
| 2024-03-09 | Reluctant to join? |
| 2023-10-30 | Nonreactive, as the noble gases |
| 2023-06-23 | Unmoving |
| 2023-03-12 | Like noble gases |
| 2022-11-26 | Unmoving |
| 2022-08-16 | Like neon and argon |
| 2022-06-05 | Still |
| 2022-03-09 | Like helium |
| 2022-01-27 | Immobile |
| 2021-10-16 | Unlikely to give a strong reaction |
| 2021-04-18 | Like neon |
| 2021-03-13 | Unmotivated, and then some |
| 2021-02-25 | Unreactive |
| 2021-01-06 | Not reacting |
| 2020-12-13 | Not so moving? |
| 2020-11-22 | Like the noble gases |
| 2020-07-16 | Like neon |
| 2020-06-20 | Unresponsive |
| 2020-05-04 | Like the gases neon and argon, but not oxygen and hydrogen |
| 2020-03-13 | Like xenon |
| 2019-12-05 | Chemically nonreactive |
| 2019-10-28 | Like argon or neon |
| 2019-09-22 | Like xenon or neon |
| 2019-05-09 | Stationary |
| 2019-04-27 | Like helium |
| 2019-03-17 | Nonreactive |
| 2019-01-03 | Like atoms with complete valence shells |
| 2018-12-19 | Like gases in the rightmost column of the periodic table |
| 2018-11-18 | Static |
| 2017-11-12 | Nonreactive |
| 2017-11-10 | Lifeless |
| 2017-11-08 | Not moving |
| 2017-10-11 | Like krypton |
| 2017-09-26 | Chemically nonreactive |
| 2017-09-24 | Sluggish |
| 2017-05-30 | Sluggish |
| 2017-04-04 | Sluggish |
| 2017-02-12 | Sluggish |
| 2016-07-28 | Unmoving |
| 2016-06-06 | Not reacting |
| 2016-05-06 | Like atoms with full outer shells |
| 2015-09-27 | Not reacting |
| 2015-09-22 | Unreactive |
| 2015-07-24 | Unable to react |
| 2015-03-26 | Like propellants in pesticides |
| 2014-12-10 | Like radon |
| 2014-04-15 | ___ gas |
| 2014-04-06 | Lifeless |
| 2014-04-05 | Stationary |
| 2014-03-17 | Lifeless |
| 2013-12-20 | Still |
| 2013-09-18 | Not showing much life |
| 2012-12-19 | Like radon |
| 2012-09-11 | Unable to move |
| 2012-04-23 | Like krypton |
| 2011-10-18 | Like helium |
| 2011-08-08 | Lifeless |
| 2010-10-18 | Nonreactive, chemically |
| 2010-09-22 | Immobile |
| 2010-05-05 | Hard to combine, chemically |
| 2009-09-26 | Hard to get a reaction out of |
| 2009-08-23 | Chemically quiet |
| 2009-07-30 | Sluggish |
| 2009-02-12 | Like neon |
| 2008-10-29 | Like krypton |
| 2008-10-05 | Like xenon |
| 2007-12-31 | Lifeless |
| 2007-10-21 | Lifeless |
| 2007-09-20 | Static |
| 2007-09-09 | Like noble gases |
| 2007-08-05 | Static |
| 2007-04-02 | Unmoving |
| 2007-01-30 | Motionless |
| 2005-11-25 | Sitting around |
| 2005-09-28 | Like neon |
| 2005-09-16 | Apt to stay put |
| 2005-05-31 | Like a bump on a log |
| 2005-04-24 | Still |
| 2005-04-05 | Like krypton |
| 2005-02-27 | Lifeless |
| 2004-10-08 | Not moving |
| 2004-08-09 | Not reacting chemically |
| 2004-05-13 | Unmoving |
| 2004-04-18 | Lifeless |
| 2004-03-23 | Like helium |
| 2004-02-28 | Very slow-moving |
| 2003-12-21 | Lifeless |
| 2003-12-01 | Stagnant |
| 2003-09-22 | Not moving |
| 2003-07-15 | Not active, chemically |
| 2003-04-20 | Still |
| 2003-03-12 | Not merely sluggish |
| 2003-01-23 | Like helium |
| 2003-01-19 | Dead to the world |
| 2002-11-26 | Like krypton or xenon |
| 2002-11-03 | Unreactive |
| 2002-08-26 | Like some gases |
| 2002-08-04 | Like a couch potato |
| 2002-06-09 | Unreactive |
| 2002-04-30 | Like helium, chemically |
| 2001-11-26 | Immobile |
| 2001-11-04 | Unmoving |
| 2001-04-04 | Like krypton |
| 2001-03-04 | Like some gases |
| 2001-02-01 | Comatose |
| 2000-12-29 | Like krypton |
| 2000-10-29 | Not reacting |
| 2000-08-07 | Unreactive |
| 2000-04-11 | Dead to the world |
| 2000-04-06 | Still |
| 1999-12-05 | Not quick to react |
| 1999-01-08 | Like 11-Down |
| 1998-09-03 | Unmoving |
| 1998-08-13 | Sluggish |
| 1998-02-20 | Just sitting |
| 1997-02-04 | Motionless |
| 1997-01-20 | Not moving |
| 1996-10-09 | Lifeless |
| 1996-09-09 | Motionless |
| 1996-06-27 | Powerless to move |
| 1996-04-06 | Like helium, e.g. |
| 1996-03-28 | Sluggish |
| 1995-12-10 | Naturally sluggish |
| 1995-08-22 | Like neon |
| 1995-06-08 | Motionless |
| 1995-02-14 | Like argon |
| 1995-02-08 | More than lethargic |
| 1995-01-22 | Sluggish |
| 1994-12-13 | Not moving |
| 1994-11-29 | Like some gases |
| 1994-11-01 | Like some gases |
| 1994-05-28 | Not active |
| 1994-05-01 | Noble, in a way |
| 1994-01-16 | Like krypton |
| 1993-12-23 | Still |
| 1993-12-06 | Chemically nonreactive |