Radium iodate
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| Name = Radium iodate
| ImageFile1 = Radium iodate.svg
| ImageSize1 = 200px
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| ImageSize2 = 200px
| PIN = Radium iodate
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|Section1={{Chembox Identifiers
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| StdInChI=1S/Ra.2HIO3/c;2*2-1(3)4/h;2*(H,2,3,4)/q+2;;/p-2
| StdInChIKey=VAIVKVGPUBOYAD-UHFFFAOYSA-L
| SMILES = [Ra+2].[O-]I(=O)=O.[O-]I(=O)=O
}}
|Section2={{Chembox Properties
| Ra=1 | I=2 | O=6
| Appearance = colorless solid
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| Solubility = 0.437 g/L (25 °C){{cite report |last1=Kirby |first1=H. W. |last2=Salutsky |first2=Murrell L. |title=The Radiochemistry of Radium |date=1 December 1964 |url=https://www.osti.gov/servlets/purl/4560824#page=19 |publisher=National Research Council |page=9 |docket=NAS-NS-3057 |doi=10.2172/4560824 |osti=4560824}}}}
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|Section6={{Chembox Related
| OtherCompounds = Barium iodate
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Radium iodate is an inorganic compound, a salt of radium and iodic acid with the chemical formula {{chem2|Ra(IO3)2}}.{{cite book |last1=Haynes |first1=William M. |title=CRC Handbook of Chemistry and Physics, 93rd Edition |date=22 June 2012 |publisher=CRC Press |isbn=978-1-4398-8049-4 |page=5-197 |url=https://books.google.com/books?id=-BzP7Rkl7WkC&dq=radium+iodate&pg=PA51 |access-date=14 June 2023 |language=en}}{{cite book |last1=MaHam |first1=Aihui |last2=Ham |first2=Bryan M. |title=Analytical Chemistry: A Chemist and Laboratory Technician's Toolkit |date=1 October 2015 |publisher=John Wiley & Sons |isbn=978-1-119-06969-0 |page=166 |url=https://books.google.com/books?id=vFa-CgAAQBAJ&dq=radium+iodate&pg=PA166 |access-date=14 June 2023 |language=en}}{{cite book |last1=Macintyre |first1=Jane E. |title=Dictionary of Inorganic Compounds, Supplement 4 |date=5 December 1996 |publisher=CRC Press |isbn=978-0-412-75020-5 |page=484 |url=https://books.google.com/books?id=VvDoE5oN09wC&dq=radium+iodate&pg=PA484 |access-date=14 June 2023 |language=en}}
Synthesis
Radium iodate is obtained by the reaction of a soluble radium salt and potassium iodate:{{cite book |last1=Weigel |first1=Fritz |title=Gmelin-Handbuch der anorganischen Chemie: System-Nummer 31. Ergänzungsband 2: Ra, Radium Element und Verbindungen |date=1977 |publisher=Springer |location=Berlin Heidelberg New York |isbn=3-540-93335-2 |page=366 |url=https://books.google.com/books?id=Lmg6AQAAIAAJ&q=KIO3}}
::{{chem2|RaCl2 + 2KIO3 -> Ra(IO3)2 + 2KCl}}
Physical properties
Radium iodate forms colorless crystals. It is poorly soluble in water.{{cite journal |last1=Brown |first1=Paul L. |last2=Matyskin |first2=Artem V. |last3=Ekberg |first3=Christian |title=The aqueous chemistry of radium |journal=Radiochimica Acta |date=1 June 2022 |volume=110 |issue=6–9 |pages=505–513 |doi=10.1515/ract-2021-1141 |s2cid=248301187 |language=en |issn=2193-3405|doi-access=free }}