| Frage | Lösung | Länge |
|---|---|---|
| chemisches Element | ACTINIUM | 8 |
| chemisches Element (Ac) | ACTINIUM | 8 |
| radioaktiver Grundstoff | ACTINIUM | 8 |
| radioaktives chemisches Element | ACTINIUM | 8 |
| radioaktives Element | ACTINIUM | 8 |
| radioaktives Element, Metall | ACTINIUM | 8 |
| radioaktives Metall | ACTINIUM | 8 |