Palladium: Difference between revisions
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'''Palladium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Pd. Its [[atomic number]] (the number of [[proton]]s) is 46. It has a [[Atomic mass#Standard atomic weights of the elements|standard atomic weight]] of 106.42 g•mol<sup> −1</sup> and is a [[solid]] in its elemental form. | '''Palladium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Pd. Its [[atomic number]] (the number of [[proton]]s) is 46. It has a [[Atomic mass#Standard atomic weights of the elements|standard atomic weight]] of 106.42 g•mol<sup> −1</sup> and is a [[solid]] in its elemental form. | ||
Palladium is considered to be a member of the "Transition metal" class of elements. At a [[pressure]] of 101.325 k[[Pascal (unit)|Pa]], it has a [[boiling point]] of 2,963 °[[Celsius (unit)|C]] and a melting point of 1,554.9 °C. | Palladium is considered to be a member of the "Transition metal" class of elements. At a [[pressure]] of 101.325 k[[Pascal (unit)|Pa]], it has a [[boiling point]] of 2,963 °[[Celsius (unit)|C]] and a [[melting point]] of 1,554.9 °C. | ||
Discovered in 1803 by [[Wallaston]], Palladium is named after [[2 Pallas|Pallas]], the second asteroid, discovered at around the same time, itself named after the [[Greek mythology|Greek goddess]] [[Pallas Athena|of wisdom]].<ref>[http://periodic.lanl.gov/46.shtml Los Alamos National Laboratory (LANL)]</ref> | Discovered in 1803 by [[Wallaston]], Palladium is named after [[2 Pallas|Pallas]], the second asteroid, discovered at around the same time, itself named after the [[Greek mythology|Greek goddess]] [[Pallas Athena|of wisdom]].<ref>[http://periodic.lanl.gov/46.shtml Los Alamos National Laboratory (LANL)]</ref> | ||
Revision as of 20:01, 24 April 2011
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Palladium is a chemical element, having the chemical symbol Pd. Its atomic number (the number of protons) is 46. It has a standard atomic weight of 106.42 g•mol −1 and is a solid in its elemental form.
Palladium is considered to be a member of the "Transition metal" class of elements. At a pressure of 101.325 kPa, it has a boiling point of 2,963 °C and a melting point of 1,554.9 °C. Discovered in 1803 by Wallaston, Palladium is named after Pallas, the second asteroid, discovered at around the same time, itself named after the Greek goddess of wisdom.[1]
Catalyst
It has a number of industrial and laboratory applications as a catalyst.
Nuclear applications
It is used in refining tritium.[2]
References
- ↑ Los Alamos National Laboratory (LANL)
- ↑ Restricted Data Declassification Decisions 1946 to the Present, U.S. Department of Energy, 1 January 2001, RDD-7