Potassium polonide
Chemical compound
From Wikipedia, the free encyclopedia
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]
Crystal structure of potassium polonide __ K+ __ Po2- | |
| Names | |
|---|---|
| Preferred IUPAC name
Potassium polonide | |
| Identifiers | |
3D model (JSmol) |
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| Properties | |
| K2Po | |
| Molar mass | 287.18 g/mol |
| Appearance | greyish[1] |
| Related compounds | |
Other anions |
Potassium oxide Potassium sulfide Potassium selenide Potassium telluride |
Other cations |
Lithium polonide Sodium polonide Rubidium polonide Caesium polonide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Characteristics
Potassium polonide is thermally more unstable and has stronger electron affinity than potassium telluride (K2Te).[2][3]
Production
Potassium polonide may be produced from a redox reaction between polonium hydride 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
Like sodium polonide, potassium polonide has the antifluorite structure.[2][3]