Gourt > Science > Chemistry > Elements > Cesium
Caesium (also spelled cesium; pronounced ) is a chemical element in the periodic table that has the symbol Cs and atomic number 55. It is a soft silvery-gold alkali metal which is one of at least three metals (and one of the five total elements) that are liquid at or near room temperature. This element is most notably used in atomic clocks.
The variant spelling cesium is sometimes used, especially in North American English, but caesium is the spelling used by the IUPAC, although since 1993 it has recognized cesium as a variant as well.
Notable characteristics
The electromagnetic spectrum of caesium has two bright lines in the blue part of the spectrum along with several other lines in the red, yellow, and green. This metal is silvery gold in color and is both soft and ductile. Caesium is also the most electropositive and most alkaline of the stable chemical elements and also has the lowest ionization potential of all the elements, except for francium. Caesium is the least abundant of the five non-radioactive alkali metals. (Technically, francium is the least common alkali metal, but since it is highly radioactive with an estimated 340 to 550 grams| title=Francium (Atomic Number 87), the Last Discovered Natural Element| first=Jean-Pierre| last=Adloff| coauthors=George B. Kauffman| accessdate=2006-05-16}} in the entire earth at one time, its abundance can be considered zero in practical terms.) More on [ Caesium ]
Outre-Manche, la chasse au césium de Tchernobyl continue chez les moutons. http://bit.ly/7y8WVS
effetsdeterre (Denis Delbecq) Tue, 29 Dec 2009 10:54:41 -0000
Outre-Manche, la chasse au césium de Tchernobyl continue chez les moutons. http://bit.ly/7y8WVS
LOL #grantchat @mythbusters U guys just blew up a toilet with rubidium and cesium.
crudradio (DJ TBom) Tue, 29 Dec 2009 00:20:08 -0000
LOL #grantchat @mythbusters U guys just blew up a toilet with rubidium and cesium.
never send to know for whom the cesium clock ticks; It ticks for thee.
animaliac (mel horvitz) Mon, 28 Dec 2009 20:34:29 -0000
never send to know for whom the cesium clock ticks; It ticks for thee.
As a geeky chick, I found this little factoid awesome "A cesium atom in an atomic clock beats over nine billion times a second."
HippyChick613 (Wendy Wayne) Mon, 28 Dec 2009 19:27:54 -0000
As a geeky chick, I found this little factoid awesome "A cesium atom in an atomic clock beats over nine billion times a second."
ç¡é§ã«ãªã¢ãªãã£ã®ãã夢ãè¦ãæãããããcesium137ããã®ä»å¹´ã®å¹´åã¯6,582,177åã§ããã http://youzaka.shisobu.in/nenshuu.php?id=cesium137
ces137 (ç è) Mon, 28 Dec 2009 08:16:20 -0000
無駄にリアリティのある夢を見た感じ、、、 cesium137さんの今年の年収は6,582,177円でした。 http://youzaka.shisobu.in/nenshuu.php?id=cesium137
Math nerd interested piqued: http://rjlipton.wordpress.com/2009/12/26/mathematical-embarrassments/
cesium (cesium) Mon, 28 Dec 2009 01:44:29 -0000
Math nerd interested piqued: http://rjlipton.wordpress.com/2009/12/26/mathematical-embarrassments/
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Cesium - Data tables and historic information.
ChemGlobe: Caesium - Electronic, thermal, and steric data along with an isotope table.
Meta Description: [ The chemical element [Cs] - Caesium - Datasheet ]
ChemicalElements.com: Cesium - Basic information, atomic structure, and isotopes table.
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EnvironmentalChemistry.com: Cesium - Atomic structure, chemical and physical properties, and table of nuclides.
It's Elemental: Cesium - Basic physical and historical information.
Meta Description: [ The Element Cesium - Basic Physical and Historical Information ]
LANL: Cesium - History, sources, properties, and costs.
Lenntech: Cesium - Physical data, chemical properties, health and environmental effects.
Meta Description: [ chemical properties, health and environmental effects of cesium ]
Radiochemistry of Cesium - Full text of the monograph by M. T. Kinsley (Brookhaven National Laboratory, Upton, New York). [PDF]
USGS Minerals Information: Cesium - Statistics and information on the worldwide supply, demand, and flow of the element (PDF format).
Meta Description: [ Statistics and information on the worldwide supply, demand, and flow of Cesium and Rubidium ]
Visual Elements: Caesium - Image, general and physical information, and key isotopes.
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WebElements: Caesium - Extensive information on history, uses, occurrence, compounds, and properties.
Meta Description: [ This WebElements periodic table page contains key information for the element caesium ]
Wikipedia: Caesium - Properties of the element, including its history, applications, and characteristics.
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