Cesium Formate is used in the production of urethane products and Cesium Sulfate is added to catalysts for use in the production of sulfuric acid. Cesium Carbonate is an important base used to synthesize various compounds in organic chemistry. Cesium chloride is used as a phase transfer catalyst in organic chemistry. Cesium graphite is used as a method of removing trace amounts of radioactive cesium from hot loops utilized in sodium-cooled reactors due to its relatively high heat. Cesium is an ideal catalyst for this photoelectric process.Ĭesium compounds are widely used today for many manufacturing processes. The electrons in cesium atoms are stimulated by direct sunlight, and in photoelectric cells, these electrons flow to create an electric current. Cesium, which is mined mostly from pollucite, has a total of 39 known isotopes.Ĭesium is used in photoelectric cells used to convert sunlight into electricity. Cesium is a very rare element and two main sources for cesium-containing ore is Canada and Zimbabwe. Earlier version first published in New English Dictionary, 1888.Atomic Number: 55 Period Number: 6 Group Number: 1Ĭesium (Caesium) is a soft and silvery-gold metal, which belongs to the alkali group. Second edition, 1989 online version June 2012 accessed 07 September 2012. "History of the recommended atomic-weight values from 1882 to 1997: a comparison of differences from current values to the estimated uncertainties of earlier values" (PDF). Washington, D.C.: American Chemical Society. The ACS Style Guide: Effective Communication of Scientific Information (3rd ed.). Nomenclature o Inorganic Chemistry (IUPAC Recommendations 2005). ↑ Internaitional Union o Pure an Applee'd Chemistry (2005).↑ "NIST Radionuclide Half-Life Measurements".Handbook of Chemistry and Physics (PDF) (87th ed.). ↑ "Magnetic susceptibility of the elements and inorganic compounds"."Atomic weights of the elements 2013 (IUPAC Technical Report)". ↑ Alang wi rubidium (39 ☌ ), francium (estimatit at 27 ☌ ), mercur (−39 ☌ ), an gallium (30 ☌ ) bromine is an aa liquid at ruim temperatur (meltin at −7.2 ☌, 19 ☏) but it is a halogen, nae a metal.Hence, an alternative orthography is cæsium. The element wis named efter the Latin word cæsius, meanin "bluish gray". The American Chemical Society (ACS) haes uised the spellin cesium syne 1921, follaein Webster's New International Dictionary. ↑ Caesium is the spellin recommendit bi the Internaitional Union o Pure an Applee'd Chemistry (IUPAC).Altho the element is anly mildly toxic, it is a hazardous material as a metal an its radioisotopes present a heich heal risk if released intae the environment. Certain facts about Caesium Chemical Properties of Cesium. The radioactive isotope caesium-137 haes a hauf-life o aboot 30 year an is uised in medical applications, industrial gauges, an hydrology. Cesium with the symbol Cs is a chemical element with atomic number 55 in the periodic table discovered by Fustov Kirchhoff & Robert Bunsen. It haes a range o applications in the production o electricity, in electronics, an in chemistry. Syne the 1990s, the lairgest application o the element haes been as caesium formate for drilling fluids. Syne then, caesium haes been widely uised in atomic clocks. In 1967, a specific frequency frae the emission spectrum o caesium-133 wis chosen tae be uised in the definition o the seicont bi the Internaitional Seestem o Units. The first smaa-scale applications for caesium wur as a " getter" in vacuum tubes an in photoelectric cells. Twa German chemists, Robert Bunsen an Gustav Kirchhoff, discovered caesium in 1860 bi the newly developed method o flame spectroscopy. Caesium is mined maistly frae pollucite, while the radioisotopes, especially caesium-137, a fission product, are extractit frae waste produced bi nuclear reactors. It is the least electronegative element havin a stable isotope, caesium-133. The metal is extremely reactive an pyrophoric, reactin wi watter even at −116 ☌ (−177 ☏). Caesium is an alkali metal an haes pheesical an chemical properties seemilar tae those o rubidium an potassium. It is a saft, sillery-gowd alkali metal wi a meltin pynt o 28 ☌ (82 ☏), which maks it ane o anly five elemental metals that are liquid at or near ruim temperatur.
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