Radium nitrate

Summary

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.[3]

Radium nitrate
Names
Other names
  • Radium(II) nitrate
  • Radium dinitrate
Identifiers
  • 10213-12-4
3D model (JSmol)
  • Interactive image
ChemSpider
  • 67037400
  • InChI=1S/2NO3.Ra/c2*2-1(3)4;/q2*-1;+2
    Key: AMLSLPXXUHKKSF-UHFFFAOYSA-N
  • [Ra+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O
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

ProductionEdit

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

RaCO3 + HNO3 → Ra(NO3)2 + CO2 + H2O

ReferencesEdit

  1. ^ a b Otto Erbacher (1930). "Löslichkeits-Bestimmungen einiger Radiumsalze" [Solubility determinations of some radium salts]. Chemische Berichte (in German). 63 (1): 141–156. doi:10.1002/cber.19300630120.
  2. ^ a b Kirby, H. W.; Salutsky, Murrell L. (1964). The Radiochemistry of Radium (PDF). National Academies Press. pp. 4–8.
  3. ^ Richard C. Ropp (2013). Encyclopedia of the alkaline earth compounds. Oxford: Elsevier. p. 223. ISBN 9780444595539.