Periodic Table of Elements

02/05/09

Te

Tellurium

Atomic Number

52

Atomic Symbol

Te

	Name	Tellurium
	Meaning	Named for the Roman goddess of the earth

Group

Metalloids

Atomic Weight

127.6

Density, g/cubic cm at STP

6.232

Melting Point, °C

449.65

Boiling Point, °C, 1 atm

990

Naturally Occurring Isotopes

Te-120, -122, -123, -124, -125, -126, -128, -130

Discoverer

von Reichenstein

Year

1782

Ionization Energy, eV

9.0096

Configuration

[Kr] 4d10 5s2 5p4

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