| Answer | Crossword Clue |
|---|---|
| INERT | Like helium and neon |
| INERT | Like neon and helium |
| INERT | Like helium or neon |
| INERT | Like neon or helium |
| GASSES | Helium and neon |
| GASES | Helium and neon |
| GASES | Neon and helium |
| GASSES | Helium and neon, for two |
| RAMSAY | Discoverer of helium and neon |
| GASSES | Helium and neon, e.g. |
| RAREGASES | Helium and neon, e.g. |
| GASHOPPERS | Pogo sticks made of neon and helium? |
| INERT | Like helium and krypton |
| INERT | Like xenon and helium |
| INERT | Like neon and xenon |
| INERT | Like xenon and neon |
| INERT | Like neon and argon |
| GASEOUS | Like nitrogen and neon |
| GASLIT | Like neon signs and some lanterns |
