Strontium ( /ˈstrɒntiəm/ STRON-tee-əm) is a chemical element with symbol Sr and atomic number 38. An alkaline earth metal, strontium is a soft silver-white or yellowish metallic element that is highly reactive chemically. The metal turns yellow when exposed to air. It occurs naturally in the minerals celestine and strontianite. While natural strontium is stable, the synthetic 90Sr isotope is present in radioactive fallout and has a half-life of 28.90 years.
Both strontium and strontianite are named after Strontian, a village in Scotland near which the mineral was first discovered in 1790 by Adair Crawford and William Cruickshank. The production of sugar from sugar beet was in the 19th century the largest application. Strontium compounds are today mostly used for the production of cathode ray tubes. The displacement of cathode ray tubes by other display methods in television sets is changing the overall consumption.
Read more about Strontium: Characteristics, History, Occurrence, Production, Isotopes, Applications, Compounds, Effect On The Human Body
Other articles related to "strontium":
... Strontium sulfide is produced by the reduction of the sulfate above 1000 °C SrSO4 + C → SrS + 2 CO2 About 300,000 tons are processed in this way annually ... of commercially useful compounds, including the most useful strontium compound, strontium carbonate ... SrS + H2O + CO2 → SrCO3 + H2S Strontium nitrate can also be prepared in this way ...
... Lanthanum strontium manganite (LSM or LSMO) is an oxide ceramic material with the general formula La1-xSrxMnO3, where x describes the doping level and is usually in the ... In the crystal, the 'A' sites are occupied by lanthanum and strontium atoms, and the 'B' sites are occupied by manganese atoms ... consists of lanthanum manganite doped with strontium oxide ...
... The human body absorbs strontium as if it were calcium ... Due to the chemical similarity of the elements, the stable forms of strontium might not pose a significant health threat — in fact, the levels found ... The strontium unit is used in measuring radioactivity from absorbed 90Sr ...
... The radioactive decay of strontium-90 generates significant amount of heat (0.921 W/g) of the isotope or approximately 0.536 W/g of the compound ... radioisotope thermoelectric generators, usually in the form of strontium fluoride ... US Sentinel series of RTGs in the form of strontium titanate ...
... Strontium iodide (SrI2) is a salt of strontium and iodine ... It is an ionic, water-soluble, and deliquescent compound that can be used in medicine as a substitute for potassium iodide ...