| 11. | It also shows many lines of uranium, and possibly the rare element holmium.
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| 12. | Holmium is named after " Holmia ", which is Latin for Stockholm.
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| 13. | Holmium bromide reacts to strong oxidising agents.
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| 14. | Holmium is rare for a lanthanide.
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| 15. | The most efficient separation routine for holmium oxide from the rare-earths is ion exchange.
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| 16. | Because holmium strongly absorbs neutrons, it is also used as a burnable poison in nuclear reactors.
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| 17. | Holmium in solution is in the form of Ho 3 + surrounded by nine molecules of water.
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| 18. | Holmium makes up 1.4 parts per million of the earth's crust by weight.
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| 19. | When involved in a fire, holmium bromide may release hydrogen bromide, and metal oxide fumes.
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| 20. | Holmium is one of the colorants used for cubic zirconia and glass, providing yellow or red coloring.
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