| Answer | Crossword Clue |
|---|---|
| INERT | Like xenon or neon |
| INERT | Like neon or xenon |
| INERT | Like xenon and neon |
| INERT | Like neon and xenon |
| GAS | Neon or xenon |
| INERTGAS | Neon or xenon. |
| INERTGAS | Neon or xenon |
| NOBLEGAS | Neon, argon, or xenon |
| INERT | Like krypton or xenon |
| INERT | Like helium or neon |
| INERT | Like Freon or neon |
| INERT | Like argon or neon |
| GASEOUS | Like neon or nitrogen |
| INERT | Like argon or neon. |
| INERT | Like neon or krypton |
| INERT | Like neon or argon |
| INERT | Like neon or radon |
| INERT | Like neon or helium |
