Periodic Table of Elements

02/05/09

Sr

Strontium

Atomic Number

38

Atomic Symbol

Sr

	Name	Strontium
	Meaning	Named for the mineral strontianite which was named for a Scottish town, Strontian

Group

Alkaline earth

Atomic Weight

87.62

Density, g/cubic cm at STP

2.64

Melting Point, °C

769

Boiling Point, °C, 1 atm

1384

Naturally Occurring Isotopes

Sr-84, -86, -87, -88

Discoverer

Davy

Year

1808

Ionization Energy, eV

5.6949

Electron configuration

[Kr] 5s2

Description

Silvery-white

Strontium is a member of the alkaline earth elements. It is added to some fireworks to give a brilliant red color.   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