Sodium polonide

{{Chembox

| ImageFile = CaF2_polyhedra.png

| ImageCaption = Crystal structure of sodium polonide
__ Na⁺     __ Po²⁻

| PIN = Sodium polonide

| Section1 = {{Chembox Identifiers

| SMILES = [Na+].[Na+].[Po-2]

| StdInChI=1S/2Na.Po/q2*+1;-2

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| Section2 = {{Chembox Properties

| Formula = {{chem2|Na2Po}}

| MolarMass = 254.96 g/mol

| Appearance = greyish{{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 |access-date=June 17, 2012 |url=https://books.google.com/books?id=8qePsa3V8GQC}}

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| Section3 = {{Chembox Related

| OtherAnions = {{ubl|Sodium oxide|Sodium sulfide|Sodium selenide|Sodium telluride}}

| OtherCations = {{ubl|Polonium hydride|Lithium polonide|Potassium polonide}}

| OtherFunction =

| OtherFunction_label =

| OtherCompounds =

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Sodium polonide is a radioactive chemical compound with the formula {{chem2|Na2Po|auto=1}}. This salt is a polonide, a set of very chemically stable compounds of polonium.{{Greenwood&Earnshaw1st|page=899}}{{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| doi-access = free}}. 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.