Radium fluoride

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| Name = Radium fluoride

| ImageFile = CaF2 polyhedra.png

| ImageCaption = {{Legend inline|#C0C0C0}} Ra²⁺ {{0}} {{Legend inline|#B3EE3A}} F⁻

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| Section1 = {{Chembox Identifiers

| CASNo = 20610-49-5

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| SMILES = F[Ra]F

| StdInChI_Ref =

| StdInChI = 1S/2FH.Ra/h2*1H;/q;;+2/p-2

| StdInChIKey = FSYYCDYDQQAUCW-UHFFFAOYSA-L

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| Section2 = {{Chembox Properties

| Formula = {{chem2|RaF2}}

| MolarMass = 263.8214 g/mol{{cite web | url=https://m.chemicalbook.com/ChemicalProductProperty_EN_CB94652905.htm | title=Radium fluoride | 20610-49-5 }}

| Appearance = White cubic crystals

| Density = 6.7 g/cm³

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| Section7 = {{Chembox Hazards

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| MainHazards = Highly radioactive and toxic

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| GHSPictograms = {{GHS08}}

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| HPhrases = {{H-phrases|H350}}

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Radium fluoride is an inorganic compound with a chemical formula of {{chem2|RaF2}}. This salt, like all radium compounds, is highly radioactive. It can be coprecipitated with lanthanide fluorides.{{Cite patent|country=US|number=1655184|title=Radium preparation and process of making same|status=|pubdate=1928-01-03|gdate=|invent1=Hahn|inventor1-first=Otto|inventorlink=Otto Hahn}} Radium fluoride has the same crystal form as calcium fluoride (fluorite).{{cn|date=September 2023}} However, calculations suggest that radium fluoride vapor consists of RaF₂ molecules, with a bond angle of 118°, due to substantial covalent interaction within the molecule.{{Cite journal |last=Lee |first=Edmond P. F. |last2=Soldán |first2=Pavel |last3=Wright |first3=Timothy G. |date=2001-11-01 |title=The Heaviest Group 2 Difluoride, RaF 2 : Geometry and Ionization Energy |url=https://pubs.acs.org/doi/10.1021/ic010538l |journal=Inorganic Chemistry |language=en |volume=40 |issue=23 |pages=5979–5984 |doi=10.1021/ic010538l |issn=0020-1669|url-access=subscription }}