Radium sulfate

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Radium sulfate
Identifiers
3D model (
JSmol
)
ChemSpider
  • InChI=1S/H2O4S.Ra/c1-5(2,3)4;/h(H2,1,2,3,4);/p-2
    Key: XOROGAYSRYIXBN-UHFFFAOYSA-L
  • [O-]S(=O)(=O)[O-].[Ra]
Properties
O4RaS
Molar mass 322 g·mol−1
Appearance White solid
3.66×10−11[2]
Related compounds
Other cations
 strontium sulfate, barium sulfate, lead(II) sulfate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Radium sulfate (or radium sulphate) is an inorganic compound with the formula RaSO4 and an average molecular mass of 322.088 g/mol.

smoke detectors
, but this has been phased out in favor of less hazardous alternatives.

Properties

Radium sulfate crystallizes in a solid in the same structure as barium sulfate. It forms crystals in the

orthorhombic crystal system, with a unit cell of dimensions a = 9.13 b=5.54 and c = 7.31 Å. The unit cell volume is 369.7 Å3.[5] Distance from the radium ion to oxygen is 2.96  Å and the sulfur to oxygen bond length in the sulfate ion is 1.485  Å. In this compound the ionic radius of the radium ion is 1.66 Å, and it is in ten coordination.[6]

Radium sulfate can form solid solutions with the sulfates of strontium, barium or lead.[6]

References

  1. ^ Chambers, Michael. "ChemIDplus - 7446-16-4 - MXQFUMUIEZBICJ-UHFFFAOYSA-L - Sulfuric acid, radium salt (1:1) - Similar structures search, synonyms, formulas, resource links, and other chemical information". chem.nlm.nih.gov.
  2. ISBN 978-1138561632
    .
  3. ^ "Radium sulfate | O4RaS | ChemSpider".
  4. ^ Kirby, H. W.; Salutsky, Murrell L. (1964). The Radiochemistry of Radium (PDF). National Academies Press. p. 12.
  5. doi:10.1016/j.jssc.2017.05.024.{{cite journal}}: CS1 maint: multiple names: authors list (link
    )
  6. ^
    doi:10.1155/2013/940701
    .
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