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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.
1802 K. 1529 °C. 2784 °F. The Gmelin rare earths handbook lists 1522 °C and 1550 °C as two melting points given in the literature, the most recent reference [Handbook on the chemistry and physics of rare earths, vol.12 (1989)] is given with 1529 °C.
Fm. Md. No. Legend. Values are in kelvin K and degrees Celsius °C, rounded. For the equivalent in degrees Fahrenheit °F, see: Boiling points of the elements (data page) Some values are predictions. Primordial From decay Synthetic Border shows natural occurrence of the element. s-block.
Caesium chloride or cesium chloride is the inorganic compound with the formula Cs Cl. This colorless salt is an important source of caesium ions in a variety of niche applications. Its crystal structure forms a major structural type where each caesium ion is coordinated by 8 chloride ions. Caesium chloride dissolves in water.
Caesium-137 (137. 55Cs. ), cesium-137 (US), [7] or radiocaesium, is a radioactive isotope of caesium that is formed as one of the more common fission products by the nuclear fission of uranium-235 and other fissionable isotopes in nuclear reactors and nuclear weapons. Trace quantities also originate from spontaneous fission of uranium-238.
The melting process is carried out in a nickel or zirconium crucible. [8] Caesium hydroxide fusion at 750°C produces complete dissolution of glass pellets. [8] Due to its high reactivity, caesium hydroxide is extremely hygroscopic. Laboratory caesium hydroxide is typically a hydrate. It is an anisotropic etchant of silicon, exposing octahedral ...
Melting point: 1,010 °C (1,850 °F; 1,280 K) Solubility in water. ... Caesium sulfate or cesium sulfate is the inorganic compound and salt with the formula Cs 2 SO 4.
Caesium oxide [1][2] [Cs+]. [Cs+]. [O-2] Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). ?) Caesium monoxide or caesium oxide is an chemical compound with the chemical formula Cs 2 O. It is the simplest and most common oxide of the caesium. It forms yellow-orange hexagonal crystals.