| undergo alpha decay | 0.35 |
| burn in air | 0.25 |
| show greater electrical… | 0.16 |
| metalloid | 0.55 |
| a chemical element | 0.55 |
| critical element | 0.25 |
| produced in the united … | 0.73 |
| discovered in 1782 | 0.60 |
| common in the universe | 0.55 |
| produced in peru | 0.48 |
| produced in japan | 0.48 |
| produced | 0.48 |
| advised to prevent exce… | 0.43 |
| recommended | 0.43 |
| recommended as injection | 0.43 |
| recovered | 0.43 |
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