| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | astatine | chemistry community | Astatine is a rare and highly radioactive element with no known biological role. | 1 |
| 2 | astatine | chemistry community | Astatine is a rare and highly radioactive element that is of interest to chemists and researchers for its unique properties. | 1 |