What is Yttrium(III) oxide?
{{chembox | Watchedfields = changed | verifiedrevid = 447560035 | Name = Yttrium(III) oxide | ImageFile = Tl2O3structure.jpg | ImageName = Yttrium(III) oxide | IUPACName = Yttrium(III) oxide. | OtherNames = Yttria,<br />diyttrium trioxide, <br /> yttrium sesquioxide |Section1={{Chembox Identifiers | PubChem = 518711 | StdInChI=1S/3O.2Y | StdInChIKey = SIWVEOZUMHYXCS-UHFFFAOYSA-N | SMILES =O=[Y]O[Y]=O | CASNo_Ref = {{cascite|correct|CAS}} | CASNo = 1314-36-9 | RTECS = ZG3850000 | UNII = X8071685XT | EINECS = 215-233-5 | ChemSpiderID = 140159 }} |Section2={{Chembox Properties | Formula = Y<sub>2</sub>O<sub>3</sub> | MolarMass = 225.81 g/mol | Appearance = White solid. | Density = 5.010 g/cm<sup>3</sup>, solid | MeltingPtC = 2425 | MeltingPt_notes = | BoilingPtC = 4300 | BoilingPt_notes = | Solubility = insoluble | Solvent = [[alcohol]] <br> [[acid]] | SolubleOther = soluble }} |Section3={{Chembox Structure | Coordination = Octahedral | CrystalStruct = [[Cubic crystal system|Cubic]] (bixbyite), [[Pearson symbol|cI80]]<ref>{{cite journal | journal = Phys. Rev. | volume = B56 | pages = 14993–15000 | year = 1997 | doi = 10.1103/PhysRevB.56.14993 | title = Electronic, structural, and optical properties of crystalline yttria |author1=Yong-Nian Xu |author2=Zhong-quan Gu |author3=W. Y. Ching | issue = 23|bibcode = 1997PhRvB..5614993X }}</ref> | SpaceGroup = Ia-3, No. 206 }} | Section4 = {{Chembox Thermochemistry | DeltaGf = -1816.609 kJ/mol<ref>R. Robie, B. Hemingway, and J. Fisher, “Thermodynamic Properties of Minerals and Related Substances at 298.15K and 1bar Pressure and at Higher Temperatures,” US Geol. Surv., vol. 1452, 1978. [https://pubs.usgs.gov/bul/1452/report.pdf]</ref> | DeltaHc = | DeltaHf = -1905.310 kJ/mol | Entropy = 99.08 J/mol·K | HeatCapacity = }} |Section7={{Chembox Hazards | EUClass = None listed. | RPhrases = Not hazardous | SPhrases = {{S24/25}} | LDLo = >10,000 mg/kg (rat, oral)<br/> >6000 mg/kg (mouse, oral)<ref>{{IDLH|7440655|Yttrium compounds (as Y)}}</ref> }} |Section8={{Chembox Rela