You are seeing Ask web results for cesium.
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Name: Cesium ; Symbol: Cs ; Atomic Number: 55 ; Atomic Mass: 132.90546 amu ; Melting Point: 28.5 °C (301.65 K, 83.3 °F) ; Boiling Point: 678.4 °C (951.55005 K, 1253.12 °F) ; Number of Protons/Electrons: 55 ; ... Cesium Links...
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Brief description: caesium is known as cesium in the USA. ... Isolation: caesium (cesium in USA) would not normally be made in the laboratory as it is available commercially. All syntheses require an electrolytic step as it is so difficult to add an electron to the poorly electronegative caesium ion Cs+.
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The Element Cesium - Basic Physical and Historical Information ... The Element Cesium; [Click for Isotope Data] ... Cesium was discovered by Robert Wilhelm Bunsen and Gustav Robert Kirchoff, German chemists, in 1860 through the spectroscopic analysis of Durkheim mineral water. They named cesium after the blue lines they observed...
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Comprehensive information for the element Cesium - Cs is provided by this page including scores of properties, element names in many languages, most known nuclides and technical terms are linked to their definitions. ... Element Cesium - Cs...
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(L. caesius: sky blue) Cesium was discovered spectroscopically in 1860 by Bunsen and Kirchhoff in mineral water from Durkheim. ... Cesium, an alkali metal, occurs in lepidolite, pollucte (a hydrated silicate of aluminum and cesium), and in other sources. One of the world's richest sources of cesium is located at Bernic...
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Caesium - Wikipedia, the free encyclopedia
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The 1955 Cesium Atomic Clock at the National Physical Laboratory, UK. It kept time to a second in 300 years. ... Today, cesium clocks measure frequency with an accuracy of from 2 to 3 parts in 10 to the 14th, i.e. 0.00000000000002 Hz; this corresponds to a time measurement accuracy of 2 nanoseconds per day or one second in...
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Discovered in 1860, cesium was discovered by using the spectrophotometer to look at the lines identifying elements in Durkheim mineral water. Spectral lines for sodium, potassium, lithium, calcium, and strontium were observed.
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Cesium is a soft- silver white ductile element of the alkali metal group. It is the most electropositive element known to man and used mostly in photoelectric cells. Cesium was the first element to be discovered by spectral analysis.
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