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Sodium polonide

__ Na+ __ Po2− Sodium polonide is a radioactive chemical compound with the formula . This salt is a polonide, a set of very chemically stable compounds of polonium. Due to the difference in electronegativity (ΔEN) between sodium and polonium (≈ 1.1 under the Pauling system) and the slight non-metallic character of polonium, it is intermediate between intermetallic phases and ionic compounds.

Production

This salt may be produced from the reaction between aqueous polonium hydride and sodium metal:

:

This method of synthesis is hampered by the chemical instability of hydrogen polonide.

Sodium polonide may also be produced by heating sodium and polonium together at 300–400 °C.

Crystal structure

Like lithium polonide and potassium polonide, sodium polonide has the antifluorite structure.

References

References

  1. (1962). "Advances in Inorganic Chemistry and Radiochemistry". [[Academic Press]].
  2. {{Greenwood&Earnshaw1st
  3. Moyer, Harvey V.. (1956). "Polonium". United States Atomic Energy Commission.
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