WebElements mini logoChemistry: WebElements Periodic Table: Professional Edition: Radium: compound data [radium (II) bromide]
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Radium

88
Ra
[226]
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Compounds of radium:

radium (II) bromide

  • Formula as commonly written: RaBr2
  • Hill system formula: Br2Ra1
  • CAS registry number: [10031-23-9]
  • Formula weight: 385.833
  • Class: bromide

Synonyms

  • radium (II) bromide
  • radium bromide
  • radium dibromide

Physical properties

  • Colour: white
  • Appearance:
  • Melting point: 728
  • Boiling point: sublimes at 900
  • Density: 5.79

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Element analysis and oxidation numbers

For each compound, and where possible, a formal oxidation number for each element is given, but the usefulness of this number is limited, especially so for p-block elements in particular. Based upon that oxidation number, an electronic configuration is also given but note that for more exotic compounds you should view this as a guide only.
Element % Formal oxidation state Formal electronic configuration
Br 41.42 -1 [Ar].3d10.4s2.4p6
Ra 58.58 2 [Rn]

Synthesis

Not available

Isotope pattern

What follows is the calculated isotope pattern for the RaBr2 unit with the most intense ion set to 100%.

Formula: Ra1Br2

mass  %
384  51.4 __________________________
385 0.0
386 100.0 __________________________________________________
387 0.0
388 48.6 ________________________

References

The data on these compounds pages are assembled and adapted from the primary literature and several other sources including the following.

  • R.T. Sanderson in Chemical Periodicity, Reinhold, New York, USA, 1960.
  • N.N. Greenwood and A. Earnshaw in Chemistry of the Elements, 2nd edition, Butterworth, UK, 1997.
  • F.A. Cotton, G. Wilkinson, C.A. Murillo, and M. Bochmann, in Advanced Inorganic Chemistry, John Wiley & Sons, 1999.
  • A.F. Trotman-Dickenson, (ed.) in Comprehensive Inorganic Chemistry, Pergamon, Oxford, UK, 1973.
  • R.W.G. Wyckoff, in Crystal Structures, volume 1, Interscience, John Wiley & Sons, 1963.
  • A.R.West in Basic solid state chemistry Chemistry, John Wiley & Sons, 1999.
  • A.F. Wells in Structural inorganic chemistry, 4th edition, Oxford, UK, 1975.
  • J.D.H. Donnay, (ed.) in Crystal data determinative tables, ACA monograph number 5, American Crystallographic Association, USA, 1963.
  • D.R. Lide, (ed.) in Chemical Rubber Company handbook of chemistry and physics, CRC Press, Boca Raton, Florida, USA, 77th edition, 1996.
  • J.W. Mellor in A comprehensive treatise on inorganic and theoretical chemistry, volumes 1-16, Longmans, London, UK, 1922-1937.
  • J.E. Macintyre (ed.) in Dictionary of inorganic compounds, volumes 1-3, Chapman & Hall, London, UK, 1992.
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