| 1. | The bulk properties of astatine are not known with any certainty.
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| 2. | Astatine-218 was the first astatine isotope discovered in nature.
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| 3. | Astatine-218 was the first astatine isotope discovered in nature.
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| 4. | Iodine and astatine only partially react with hydrogen, forming equilibria.
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| 5. | Polonium and astatine are produced in minute quantities by irradiating bismuth.
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| 6. | *Astatine is toxic, radioactive, reactive, and unstable.
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| 7. | Tin forms dihalides and tetrahalides with all halogens except astatine.
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| 8. | Attempts to synthesize astatine fluoride have been met with failure.
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| 9. | Astatine's main use is in radiotherapy to kill cancer cells.
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| 10. | Astatine is the least likely element to ever get any image whatsoever.
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