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Radium fluoride

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Radium fluoride

   Ra2+ 0    F
Identifiers
3D model (JSmol)
  • InChI=1S/2FH.Ra/h2*1H;/q;;+2/p-2
    Key: FSYYCDYDQQAUCW-UHFFFAOYSA-L
  • F[Ra]F
Properties
RaF2
Molar mass 263.8214 g/mol[1]
Appearance White cubic crystals[1]
Density 6.7 g/cm3[1]
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
Highly radioactive and toxic
GHS labelling:
GHS08: Health hazard
H350
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Radium fluoride is an inorganic compound with a chemical formula of RaF2. This salt, like all radium compounds, is highly radioactive. It can be coprecipitated with lanthanide fluorides.[2] Radium fluoride has the same crystal form as calcium fluoride (fluorite).[citation needed] However, calculations suggest that radium fluoride vapor consists of RaF2 molecules, with a bond angle of 118°, due to substantial covalent interaction within the molecule.[3]

Production

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Radium fluoride can be produced by the reaction of radium metal and hydrogen fluoride gas:[citation needed]

Ra + 2 HF → RaF2 + H2

References

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  1. ^ a b c "Radium fluoride | 20610-49-5".
  2. ^ US 1655184, Hahn, Otto, "Radium preparation and process of making same", published 1928-01-03 
  3. ^ Lee, Edmond P. F.; Soldán, Pavel; Wright, Timothy G. (2001-11-01). "The Heaviest Group 2 Difluoride, RaF 2 : Geometry and Ionization Energy". Inorganic Chemistry. 40 (23): 5979–5984. doi:10.1021/ic010538l. ISSN 0020-1669.

See also

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