Polonium sulfide

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Polonium sulfide
Names
Other names
Polonium monosulfide[1]
Identifiers
3D model (
JSmol
)
  • InChI=1S/Po.S
    Key: PKZBITJUBFSEGA-UHFFFAOYSA-N
  • [Po]=[S]
Properties
PoS
Molar mass 241.07 g/mol
Appearance Black crystals
Melting point 500 °C (932 °F; 773 K)
Insoluble[2]
Related compounds
Related compounds
 Chromium(III) sulfide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Polonium sulfide is an inorganic compound of polonium and sulfur with the chemical formula PoS.[3] The compound is radioactive and forms black crystals.[4][5]

Synthesis

1. Passing hydrogen sulfide through an acidic solution of a polonium(II) salt:[6][7]

2. Reaction of

ammonium sulfide
aqueous solution with polonium(II) hydroxide:

Physical properties

Polonium sulfide forms black solid crystals, insoluble in water,

ammonium sulfide, ethanol, acetone, or toluene
.

Chemical properties

Polonium sulfide has strong reducing properties and can be oxidized by

chlorine water, bromine water, sodium hypochlorite, and aqua regia. Polonium sulfide is also unstable to heating. It decomposes into elemental polonium and elemental sulfur when heated to 274.85°C in a vacuum:[8]

Reacts with concentrated acids:

Applications

Used in the isolation and purification of polonium.

References

  1. Encyclopedia Britannica
    . Retrieved 2 November 2021.
  2. ISBN 978-0-19-539335-4
    .
  3. ISBN 978-0-412-30120-9
    . Retrieved 2 November 2021.
  4. S2CID 59461310
    . Retrieved 2 November 2021.
  5. sciencedirect.com
    . Retrieved 2 November 2021.
  6. ISBN 978-0-12-352651-9
    . Retrieved 2 November 2021.
  7. ISBN 978-1-4757-6918-0
    . Retrieved 2 November 2021.
  8. ISBN 978-0-12-819309-9
    . Retrieved 2 November 2021.
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