Periodic Table of Elements

02/05/09

W

Tungsten

Atomic Number

74

Atomic Symbol

W

	Name	Tungsten
	Meaning	Name from the Swedish words 'tung' + 'sten' meaning 'heavy stone'; symbol from German, wolfram, an ore found with tin

Group

Transition metals

Atomic Weight

183.84

Density, g/cubic cm at STP

19.25

Melting Point, °C

3407

Boiling Point, °C, 1 atm

5660

Naturally Occurring Isotopes

W-180, -182, -184, -186

Discoverer

Scheele/J. and F. d'Elhuyar

Year

1781/1783

Ionization Energy, eV

7.864

Configuration

[Xe] 4f14 5d4 6s2

Description

Lustrous grey

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