| 11. | Substances found in large quantities include mercury, and thallium.
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| 12. | Thallium from the volcano is a pollution hazard in the Talabre area.
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| 13. | The monohalides all contain thallium with oxidation state + 1.
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| 14. | However, molecular thallium hydride has been isolated in solid gas matrices.
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| 15. | Also, thallium was found to inhibit the activity of thiol enzymes.
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| 16. | We thought we'd heard the last of the Thallium Stress Test.
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| 17. | "Thallium is what killed the victim, " he said.
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| 18. | Thallium is the heaviest stable element in group 13 of the periodic table.
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| 19. | When isolated, thallium resembles tin, but discolors when exposed to air.
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| 20. | Thallium can also be obtained from the smelting of lead and zinc ores.
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