| Clue | Source | Date |
|---|---|---|
| First Nobel Prize sharers | Newsday | 10 Nov 2019 |
| Radioactivity units | USA Today | 10 Oct 2016 |
| Radioactivity units | ||
| Radium discoverers | ||
| Pair of great scientists. | ||
| Noted Polish-French physicists. | ||
| Famed Nobel prize winners. | ||
| Famous physicists. | ||
| Great scientists. |