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This comprehensive guide delves into its physical and chemical properties, reactivity, abundance, and the cutting-edge uses in scientific research and technology. Learn about the safety measures and interesting facts surrounding this highly reactive element.
Element Caesium (Cs), Group 1, Atomic Number 55, s-block, Mass 132.905. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
Caesium (IUPAC spelling; [9] also spelled cesium in American English) is a chemical element; it has symbol Cs and atomic number 55. It is a soft, silvery-golden alkali metal with a melting point of 28.5 °C (83.3 °F; 301.6 K), which makes it one of only five elemental metals that are liquid at or near room temperature .
28 cze 2024 · Cesium, a fascinating element on the periodic table, plays a crucial role in various applications. This guide delves into its intriguing properties and practical uses, offering a comprehensive understanding for teachers and students alike.
Most caesium compounds contain the element as the cation Cs+, which binds ionically to a wide variety of anions. Salts of Cs+ are usually colourless unless the anion itself is coloured. The phosphate, acetate, carbonate, halides, oxide, nitrate, and sulfate salts are water-soluble.
Cesium is a very reactive metal. It combines quickly with oxygen in the air and reacts violently with water. In the reaction with water, hydrogen gas is released. Hydrogen gas ignites immediately as a result of the heat given off by the reaction.
Significance and Uses. Caesium is used in vacuum tubes as a “getter” to clean the traces of oxygen and other gases when sealed. Caesium compounds with chlorides are used in photoelectric cells. Caesium is used in industries as a catalyst promoter. Caesium nitrate is used to make optical glasses.
