Potassium polonide

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Potassium polonide
Preferred IUPAC name
Potassium polonide
Molar mass 287.18 g/mol
Appearance greyish[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Potassium polonide is a chemical compound with the formula K2Po. It is a polonide, a set of very chemically stable compounds of polonium.[2][3]


Potassium polonide is thermally more unstable and has stronger electron affinity than potassium telluride (K2Te).[2][3]


Potassium polonide may be produced from a redox reaction between hydrogen polonide and potassium metal:[2][3]

H2Po + 2 K → K2Po + H2

It may also be produced by heating potassium and polonium together at 300–400 °C.[1] At higher temperature, this reaction may reverse.

Crystal structure[edit]

Like sodium polonide, potassium polonide has the antifluorite structure.[2][3]


  1. ^ a b Bagnall, K. W. (1962). "The Chemistry of Polonium". Advances in Inorganic Chemistry and Radiochemistry. New York: Academic Press. pp. 197–230. ISBN 9780120236046. Retrieved June 17, 2012. 
  2. ^ a b c d Greenwood, Norman N.; Earnshaw, Alan (1984). Chemistry of the Elements. Oxford: Pergamon Press. p. 899. ISBN 0-08-022057-6. 
  3. ^ a b c d Moyer, Harvey V. (1956), "Chemical Properties of Polonium", in Moyer, Harvey V., Polonium, Oak Ridge, Tenn.: United States Atomic Energy Commission, pp. 33–96, doi:10.2172/4367751, TID-5221 .