| 词条 | Sodium polonide |
| 释义 |
| PIN = Sodium polonide |Section1 = {{Chembox Identifiers |Section2 = {{Chembox Properties | Formula = Na2Po | MolarMass = 254.96 g/mol | Appearance = greyish[1] }} }} Sodium polonide is a chemical compound with the formula Na2Po. It is a polonide, a set of very chemically stable compounds of polonium.[2][3] Due to the difference in electronegativity (ΔEN) between sodium and polonium (≈ 1.1 under the Pauling system) and the slight non-metallic character of polonium, it is intermediate between intermetallic phases and ionic compounds. ProductionThis salt may be produced from the reaction between aqueous hydrogen polonide and sodium metal:[2][3] H2Po + 2 Na → Na2Po + H2 This method of synthesis is hampered by the chemical instability of hydrogen polonide. Sodium polonide may also be produced by heating sodium and polonium together at 300–400 °C.[1] Crystal structureLike lithium polonide and potassium polonide, sodium polonide has the antifluorite structure.[2][3] References1. ^1 {{cite book |title=Advances in Inorganic Chemistry and Radiochemistry |chapter=The Chemistry of Polonium |last1=Bagnall |first1=K. W. |year=1962 |publisher=Academic Press |location=New York |isbn=9780120236046 |pages=197–230 |accessdate=June 17, 2012 |url=https://www.google.com/books?id=8qePsa3V8GQC}} {{Sodium compounds}}{{Polonium compounds}}{{inorganic-chemistry-stub}}2. ^1 2 {{Greenwood&Earnshaw1st|page=899}} 3. ^1 2 {{citation | last = Moyer | first = Harvey V. | contribution = Chemical Properties of Polonium | pages = 33–96 | title = Polonium | url = http://www.osti.gov/bridge/servlets/purl/4367751-nEJIbm/ | editor-last = Moyer | editor-first = Harvey V. | id = TID-5221 | doi = 10.2172/4367751 | year = 1956 | location = Oak Ridge, Tenn. | publisher = United States Atomic Energy Commission}}. 2 : Sodium compounds|Polonides |
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