Answer:
thorium
| Answer | Crossword Clue |
|---|---|
| THORIUM | Element number 90 |
| THORIUM | Radioactive element no. 90. |
| THORIUM | Element in vacuum tube filaments |
| THORIUM | Metal that's an effective radiation shield |
| Answer | Crossword Clue |
|---|---|
| THORIUM | Element number 90 |
| THORIUM | Radioactive element no. 90. |
| THORIUM | Element in vacuum tube filaments |
| THORIUM | Metal that's an effective radiation shield |