| Answer | Crossword Clue |
|---|---|
| INERT | Like a pocketful of krypton |
| INERT | Like krypton |
| ODORLESS | Like krypton |
| GASEOUS | Like krypton |
| INERT | Like helium and krypton |
| INERT | Like neon or krypton |
| INERT | Like argon or krypton |
| NOBLE | Like argon or krypton |
| INERT | Like krypton and argon |
| INERT | Like xenon and krypton |
| INERT | Like krypton or xenon |
| INERT | Like krypton and xenon |
