Chemistry:Radium nitrate

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Radium nitrate
Radium nitrate.svg
Names
Other names
  • Radium(II) nitrate
  • Radium dinitrate
Identifiers
3D model (JSmol)
ChemSpider
Properties
Ra(NO3)2
Molar mass 350.01 g/mol
Appearance White solid[1]
Melting point 280 °C (536 °F; 553 K) (decomposes)
13.9 g/100 ml
Solubility in nitric acid Insoluble
Related compounds
Other anions
Radium carbonate
Other cations
Barium nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Radium nitrate is a radioactive salt with the formula Ra(NO3)2. It is a white solid, but old samples appear yellowish-grey. It has a lower solubility than barium nitrate.[1][2] It decomposes at 280 °C to radium oxide.[citation needed]

Production

Radium nitrate is produced by the reaction of radium carbonate or radium sulfate with nitric acid:[2]

RaCO3 + HNO3 → Ra(NO3)2 + CO2 + H2O

References

  1. 1.0 1.1 Otto Erbacher (1930). "Löslichkeits-Bestimmungen einiger Radiumsalze" (in German). Chemische Berichte 63 (1): 141–156. doi:10.1002/cber.19300630120. 
  2. 2.0 2.1 Kirby, H. W.; Salutsky, Murrell L. (1964). The Radiochemistry of Radium. National Academies Press. pp. 4–8. https://sgp.fas.org/othergov/doe/lanl/lib-www/books/rc000041.pdf. 
Salts and covalent derivatives of the nitrate ion