| Clue | Source | Date |
|---|---|---|
| Iron or lead | LA Times Daily | 11 Jan 2022 |
| Mercury or gallium | USA Today | 22 Jul 2017 |
| Mercury or gallium | ||
| Mercury or silver | ||
| What's been deposited in four squares of this puzzle, expressed both by name and by symbol | ||
| Silver | ||
| IRON | ||
| Mercury | ||
| SILVER | ||
| Mercury |