Sodium polonide

Crystal structure
__ Na +      __ Po 2−
Crystal system	cubic
Space group	Fm 3 m (No. 225)
Lattice parameters	a = 7.473 ± 0.004  Å
General
Surname	Sodium polonide
other names	Disodium polonide
Ratio formula	Well 2 Po
Brief description	gray solid
External identifiers / databases
CAS number 106524-50-9 Wikidata Q7788974
properties
Molar mass	254.96 g mol −1
Physical state	firmly
density	4.08 g cm −3
Hazard and safety information
Radioactive
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Sodium polonide , Na ₂ Po is a chemical compound from the group of polonides with sodium .

Extraction and presentation

The reaction of polonium and sodium hydroxide results in sodium polonide , among other things.

${\displaystyle {\ce {3 Po + 6 NaOH -> 2 Na2Po + Na2PoO3 + 3 H2O}}}$

Another possibility would be to use the same reaction, only instead of the polonium lead polonide .

${\displaystyle {\ce {PbPo + 4 NaOH -> Na2Po + Na2PbO2 + 2 H2O}}}$

properties

Just like sodium telluride, the salt crystallizes in the anti-calcium fluoride type , a cubic crystal system with the space group Fm 3 m (space group no. 225) . The lattice parameter is a = 7.473 ± 0.004  Å .

Individual evidence

1. ^ HJ Emeléus, AG Sharpe: Advances in Inorganic Chemistry and Radiochemistry . tape 4 . Academic Press, 1962, ISBN 0-08-057853-5 , pp. 209-210 .
2. ^ ^{A b} Harvey V. Moyer: Chemical Properties of Polonium . 1956, p. 96 , doi : 10.2172 / 4367751 .
3. ↑ The hazards emanating from radioactivity do not belong to the properties to be classified according to the GHS labeling. With regard to other hazards, this substance has either not yet been classified or a reliable and citable source has not yet been found.
4. ↑ ^{a b} Christopher Lee Larson: Polonium extraction techniques for a lead-bismuth cooled fast reactor . 1978, p. 7 ( wmsym.org [PDF]).