Periodic Table of Elements

02/05/09

Pd

Palladium

Atomic Number

46

Atomic Symbol

Pd

Name

Palladium

	Meaning	Named after the asteroid Pallas
	Group	Transition metals

Atomic Weight

106.42

Density, g/cubic cm at STP

12.020

Melting Point, °C

1552

Boiling Point, °C, 1 atm

2970

Naturally Occurring Isotopes

Pd-102, -104, -105, -106, -108, -110

Discoverer

Wollaston

Year

1803

Ionization energy, eV

8.3369

Configuration

[Kr] 4d10

Description

Silvery-white

Information Palladium is a rare transition metal that has the unusual property of absorbing Hydrogen at room temperature, which sometimes forms PdH. It is widely used in catalytic converters to reduce the amount of CO emissions from car exhaust. Joseph's Element collection Joseph has not yet obtained a sample of Palladium. 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