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yttrium
yttrium Chem. (ˈɪtrɪəm) [mod.L., f. yttria, after names of other metals in -ium.] A rare metal of the cerium group, the base of the earth yttria. Symbol Y.1822 Imison's Sci. & Art II. 93 The base of yttria has been supposed to be a metallic substance, which would receive the name of yttrium. 1866 Ro...
Oxford English Dictionary
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Yttrium
Yttrium has no known biological role. Exposure to yttrium compounds can cause lung disease in humans. With halogens, yttrium forms trihalides such as yttrium(III) fluoride (), yttrium(III) chloride (), and yttrium(III) bromide () at temperatures above roughly
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Yttrium orthovanadate
Yttrium orthovanadate (YVO4) is a transparent crystal. orthovanadate
References
Vanadates
Yttrium compounds
Optical materials
Crystals
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Yttrium-90
Yttrium-90 () is an isotope of yttrium. Yttrium-90 has found a wide range of uses in radiation therapy to treat some forms of cancer. See also
Isotopes of yttrium
Unsealed source radiotherapy
References
External links
Isotopes of yttrium
Medical isotopes
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Yttrium iodide
Yttrium iodide is a binary inorganic compound, a salt of yttrium and hydroiodic acid with the formula . Heating yttrium oxide with ammonium iodide:
Y2O3 + 6NH4I -> 2YI3 + 6NH3 + 3H2O
It can also be obtained by reacting yttrium oxide or yttrium hydroxide
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Yttrium acetylacetonate
Yttrium acetylacetonate is a coordination compound of yttrium, with the chemical formula of Y(C5H7O2)3, or Y(acac)3 for short. It thermally decomposes to form yttrium oxide.
References
Yttrium compounds
Acetylacetonate complexes
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Yttrium oxalate
Yttrium oxalate is an inorganic compound, a salt of yttrium and oxalic acid with the chemical formula Y(CO). Synthesis
Precipitation of soluble yttrium salts with oxalic acid:
Properties
Yttrium oxalate is highly insoluble in water and converts to the oxide
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Yttrium perchlorate
Yttrium perchlorate is the inorganic compound with the chemical formula . The compound is an yttrium salt of perchloric acid. Synthesis
Dissolving yttrium oxide in perchloric acid solution can produce yttrium perchlorate octahydrate.
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(PDF) Enrichment mechanism of rare earth elements and yttrium in deep ...
The deep-sea mud in Clarion-Clipperton region (CC Zones), East Pacific Ocean have a high content of rare earth elements and yttrium (REY). Understanding the REY enrichment mechanism in pelagic ...
www.researchgate.net
Yttrium nitride
Yttrium nitride, YN, is a nitride of yttrium.
Yttrium nitride is hard ceramic material similar to titanium nitride and zirconium nitride. References
Nitrides
Yttrium compounds
Rock salt crystal structure
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Yttrium phosphide
Yttrium phosphide is an inorganic compound of yttrium and phosphorus with the chemical formula YP. The compound may be also classified as yttrium(III) phosphide.
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Yttrium(III) phosphate
Preparation
Yttrium phosphate can be obtained by reacting yttrium chloride and sodium phosphate, or by reacting yttrium nitrate and diammonium hydrogen Yttrium phosphate reacts with concentrated alkali to form yttrium hydroxide.
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Yttrium(III) fluoride
Yttrium(III) fluoride can be used for the production of metallic yttrium, thin films, glasses and ceramics. References
Fluorides
Metal halides
Yttrium compounds
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Yttrium borides
The most common form is the yttrium hexaboride YB6. Another remarkable yttrium boride is YB66.
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Yttrium oxyfluoride
Synthesis
Yttrium oxyfluoride may be formed in the decomposition of crystalline hydrate of yttrium fluoride upon heating to 900 °C in a vacuum:
Yttrium Applications
Stable yttrium oxyfluoride material is used for inner walls of plasma process equipment.
References
Yttrium compounds
Oxyfluorides
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