Polonids
Polonides are a series of chemical compounds in which the polonium is present as Po 2− . They are the salts of polonium hydrogen .
Extraction and presentation
A variety of polonides can be produced by the direct reaction of polonium and another element at 300 to 400 ° C.
properties
Physical Properties
Most Polonide have a sodium chloride -like crystal system such as Natriumpolonid , Bleipolonid or the Lanthanoidpolonide . Beryllium polonide and cadmium polonide have a zinc sulfide- like crystal structure . The nickel arsenide structure was found in magnesium polonide.
Chemical properties
The polonides are considered to be the most stable compounds in polonium .
Examples
- Lead polonid PbPo
- Cadmium Polonide CdPo
- Potassium polonide K 2 Po
- Magnesium polonide MgPo
- Sodium polonide Na 2 Po
- Platinum polonide PtPo 2
- Mercury Polonide HgPo
- Silver polonide Ag 2 Po
Individual evidence
- ^ HJ Emeléus, AG Sharpe: Advances in Inorganic Chemistry and Radiochemistry . tape 4 . Academic Press, 1962, ISBN 0-08-057853-5 , pp. 209-210 .
- ^ A b Norman Neill Greenwood, Alan Earnshaw: Chemistry of the elements . Pergamon Press, 1984, ISBN 0-08-022056-8 , pp. 899 .