FACULTY OF CHEMICAL TECHNOLOGY IN SPLIT
PERIODIC TABLE OF THE ELEMENTS version 1.7
Xe
English: Xenon
French: Xénon
Croatian: Ksenon
German: Xenon
Italian: Xeno
Atomic number: 54
Group numbers: 18
Period: 5
Standard state (20 °C): gas
Xenon was discovered by Sir William Ramsay, Morris W. Travers (England) in 1898. The origin of the name comes from the Greek word xenos meaning stranger. It is heavy, colourless, odourless, noble gas. Reacts only with fluorine.
Electronic configuration: [Kr] 4d10 5s2 5p6
Relative atomic mass: 131.293(6)
Formal oxidation number: 0
Electronegativities: 2.6
Thermal conductivity: 0.0056 W/(m K)
Electrical resistivity (20 °C): - μΩcm
Atomic radius: 216 pm
Density (g/dm3): 3540 (solid, m.p.)
2939 (liquid, b.p.)
5.8971 (gas, 273 K)
Molar volume (cm3/mol): 37.09 (solid, m.p.)
44.67 (liquid, b.p.)
22263.99 (gas, 273 K)
Melting point: -111.75 °C
Boiling point: -108.0 °C
Critical temperature: 16.57 °C
Heat of fusion: 3.1 kJ/mol
Heat of vaporization: 12.65 kJ/mol
Heat of atomization: 0 kJ/mol
Xenon is obtain from the small quantities in liquid air. Used for filling flash lamps and other powerful lamps. Electrical excitation of xenon produces a burst of brilliant white light. Also used in bubble chambers and modern nuclear power reactors. The price of 99.995 % pure xenon gas costs 266.50 €/dm3 in small quantities (1 dm3) and about 10.62 €/dm3 in large quantities (300 dm3).
53I <= 54Xe => 55Cs
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Periodic Table of the Elements
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Last modified:
29.03.2003
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