Last seen in:
- Thomas Joseph - King Feature Syndicate - Jul 27 2024
- Universal - Dec 16 2023
- L.A. Times Daily - Oct 8 2022
- Family Time - Nov 17 2019
- Thomas Joseph - King Feature Syndicate - Aug 6 2019
- Universal - Feb 25 2018
- USA Today - Feb 9 2016
- Thomas Joseph - King Feature Syndicate - Oct 26 2015
- Family Time - Oct 25 2015
- Family Time - Oct 5 2015
Related Clues:
- Atomic number 54
- Invisible health hazard
- Composition of some plasmas
- A fuel gas
- Gas used in flash lamps
- World's most produced organic compound
- Gas used in lasers
- Charcoal alternative
- Element #18
- Hydrocarbon with two carbons
- Fruit-ripening gas
- Gas given off by ripening fruit
- Element in strobe lights
- Gaseous radioactive element
- Densest gas