Periodic Table of Elements

06/15/07

Xe

Xenon

Atomic Number

54

Atomic Symbol

Xe

	Name	Xenon
	Meaning	Name comes from the Greek word 'xenon' meaning 'the stranger'

Group

Noble gases

Atomic Weight

131.293

Density, g/cubic cm at STP

0.005887

Melting Point, °C

-111.7

Boiling Point, °C, 1 atm

-107

Naturally Occurring Isotopes

Xe-124, -126, -128, -129, -130, -131, -132, -134, -136

Discoverer

Ramsay and Travers

Year

1898

Ionization Energy, eV

12.1298

Configuration

[Kr] 4d10 5s2 5p6

Description

Colorless, odorless gas at STP

Information Xenon is another noble gas found in trace amounts in the atmosphere. It is not completely inert, however, and forms a number of exotic compounds with Fluorine, such as XeF4. Xenon itself is not toxic, but its compounds are. Joseph's Element Collection Joseph has not yet obtained a sample of Xenon. References: Holden, Norman E. (March 30, 2004). "History of the origin of the chemical elements and their discoverers." National Nuclear Data Center. Retrieved October 7, 2005 from http://www.nndc.bnl.gov/content/elements.html "List of elements by boiling point." (September 22, 2005). Wikipedia. Retrieved October 9, 2005 from http://en.wikipedia.org/wiki/List_of_elements_by_boiling_point "List of elements by density." (September 22, 2005). Wikipedia. Retrieved October 9, 2005 from http://en.wikipedia.org/wiki/List_of_elements_by_density "List of elements by melting point." (September 22, 2005). Wikipedia. Retrieved October 9, 2005 from http://en.wikipedia.org/wiki/List_of_elements_by_melting_point "NIST chemistry webBook." (2005). National Institute of Standards and Technology. Retrieved October 6, 2005 from http://webbook.nist.gov/chemistry/ Zucker, M.A.; Kishore, A. R.; Sukumar, R.; and Dragoset, R. A. (July 2005). "Elemental data index."  National Institute of Standards and Technology. Retrieved October 7, 2005 from http://physics.nist.gov/PhysRefData/Elements/cover.html