| the densest metal | 0.84 |
| alloyed with other meta… | 0.63 |
| a chemical element | 0.55 |
| known element | 0.25 |
| obtained | 0.55 |
| replaced by stable meta… | 0.50 |
| discovered by smithson … | 0.25 |
| credited | 0.25 |
| established in the futu… | 0.25 |
| established in product | 0.25 |
| identified in black res… | 0.25 |