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Caesium (IUPAC spelling; 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 .
Element Caesium (Cs), Group 1, Atomic Number 55, s-block, Mass 132.905. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
Cesium is the 55th element in the periodic table and has a symbol of Cs and atomic number of 55. It has an atomic weight of 132.90545 and a mass number of 133. Cesium has fifty-five protons and seventy-eight neutrons in its nucleus, and fifty-five electrons in six shells.
Cesium is a silvery-gold metal with the symbol Cs and atomic number 55. It is the most alkaline and reactive of all elements and has many applications in science and industry.
Cesium is a soft, silvery-gold alkali metal with a melting point of 28 °C and a symbol Cs. It was discovered in 1860 by Bunsen and Kirchhoff and is used in atomic clocks and spectroscopy.
Caesium is a soft, light gray, ductile metal with atomic number 55. It has 13 isotopes, including the radioactive 137 Cs, and is used in vacuum tubes, photoelectric devices and atomic clocks.
Jul 18, 2024 · cesium (Cs), chemical element of Group 1 (also called Group Ia) of the periodic table, the alkali metal group, and the first element to be discovered spectroscopically (1860), by German scientists Robert Bunsen and Gustav Kirchhoff, who named it for the unique blue lines of its spectrum (Latin caesius, “sky-blue”).
