| 1. | Similar effect is observed in monochalcogenides of another lanthanide, thulium.
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| 2. | A relatively pure sample of thulium metal was first obtained in 1911.
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| 3. | Thulium exists as a Tm 3 + ion in solution.
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| 4. | Thulium reacts with hydrogen chloride to produce hydrogen gas and thulium chloride.
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| 5. | Thulium reacts with hydrogen chloride to produce hydrogen gas and thulium chloride.
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| 6. | Combination of thulium and chalcogens results in thulium chalcogenides.
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| 7. | Combination of thulium and chalcogens results in thulium chalcogenides.
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| 8. | Holmium and thulium are used in some very high power movie lighting models.
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| 9. | In this state, the thulium ion is surrounded by nine molecules of water.
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| 10. | Holmia was later found to be the holmium oxide and thulia was thulium oxide.
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