| 11. | Terbium ( III ) chloride frequently forms a hexahydrate.
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| 12. | Swedish chemist Carl Gustaf Mosander discovered terbium as a separate elemental compound in 1843.
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| 13. | Terbium was not isolated in pure form until the advent of ion exchange techniques.
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| 14. | Terbium oxide is used in green phosphors in fluorescent lamps and color TV tubes.
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| 15. | However they were unable to make the cerium, praseodymium, and terbium nickelates.
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| 16. | Terbium easily oxidizes, and is therefore used in its elemental form specifically for research.
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| 17. | Terbium-CRTs, though its drawback is marked lowering of efficiency at higher temperatures.
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| 18. | Dysprosium is one of the components of Terfenol-D, along with iron and terbium.
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| 19. | This permitted the discovery of four new elements : Yttrium, Terbium, Erbium and Ytterbium.
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| 20. | The yttrofluorite variety of the mineral fluorite owes its creamy-yellow fluorescence in part to terbium.
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