Periodic Table of Elements

02/05/09

Pb

Lead

Atomic Number

82

Atomic Symbol

Pb

	Name	Lead
	Meaning	Name is Anglo-Saxon of unknown origin; symbol from Latin 'plumbum' meaning lead

Group

Other metals, p-block metals

Atomic Weight

207.2

Density, g/cubic cm at STP

11.342

Melting Point, °C

327.6

Boiling Point, °C, 1 atm

1744

Naturally Occurring Isotopes

Pb-204, -206, -207, -208

Discoverer

Unknown

Year

Prehistoric

Ionization Energy, eV

7.4167

Configuration

[Xe] 4f14 5d10 6s2 6p2

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