Lutecium
Revision as of 06:08, 24 July 2013 by (username removed)
Description
A soft, metallic rare-earth element that occurs with other rare-earth elements in monazite, gadolinite, and xenotime. First identified in 1907 by Georges Urbain and Carl Auer von Welsbach, lutetium is the least abundant of the Lanthanide elements estimated as present in 0.8 ppm of the earth's crust. Pure metallic lutetium is a silvery-white in color. It is used in nuclear technology and semiconductors.
Synonyms and Related Terms
Lu; lutecium; lutécium (Fr.); lutezio (It.); Lutécio (Port.); lutecio (Esp.)
Other Properties
Soluble in dilute acids. Reacts slowly with water.
| Composition | Lu (atomic no. 71) |
|---|---|
| CAS | 7439-94-3 |
| Melting Point | 1663 |
| Density | 9.8404 |
| Molecular Weight | atomic wt = 174.967 |
| Boiling Point | 3402 |
Hazards and Safety
Reacts with air and moisture.
Fisher Scientific: MSDS
Additional Information
Web Elements: Website
Authority
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 5642
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
- Website address 1 Comment: Web elements at http://www.webelements.com/webelements/elements/text/Lu/hist.html