Difference between revisions of "Lutetium"
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| − | {{Element | name=Lutetium | symbol=Lu | anumber=71 | amass=174.967 amu | state=Solid | class= | + | {{Element | name=Lutetium | symbol=Lu | anumber=71 | amass=174.967 amu | state=Solid | class=Rare Earth | cstructure=Hexagonal| density=9.840 g/cm^3 | color=silvery white | stableisotopes=2 | date=1907 | discname=Georges Urbain, Carl Auer von Welsbach and Charles James | origname=From ''Lutetia'', the ancient name of Paris. | uses=Used in alloys and can be used as a catalyst in cracking, hydrogenation, polymerization and alkylation. It's primary use is in chemical research. | obtained=Found with [[ytterbium]] in [[gadolinite]] and [[xenotime]]. Its chief ores are [[monazite]] and [[bastnasite]]. }} |
| − | '''Lutetium''' is the hardest and densest of the rare earth [[metal]]s. | + | '''Lutetium''' is the hardest and densest of the rare earth [[metal]]s. It has two stable isotopes (actually one, but another one has a [[half-life]] of over 10<sup>10</sup> years). |
| + | |||
| + | Lutetium was discovered in 1907 by Georges Urbain and others, after being separated from ytterbium. This brought to a close a long period of confusion about whether the (very similar) elements ytterbium, terbium, and erbium were different, and which one was which. | ||
[[Category:Elements]] | [[Category:Elements]] | ||
Revision as of 14:15, December 1, 2008
| Lutetium | |
|---|---|
| Properties | |
| Atomic symbol | Lu |
| Atomic number | 71 |
| Classification | Rare Earth |
| Atomic mass | 174.967 amu |
| Number of Stable Isotopes | 2 |
| Density (grams per cc) | 9.840 g/cm^3 |
| Other Information | |
| Date of discovery | 1907 |
| Name of discoverer | Georges Urbain, Carl Auer von Welsbach and Charles James |
| Name origin | From Lutetia, the ancient name of Paris. |
| Uses | Used in alloys and can be used as a catalyst in cracking, hydrogenation, polymerization and alkylation. It's primary use is in chemical research. |
| Obtained from | Found with ytterbium in gadolinite and xenotime. Its chief ores are monazite and bastnasite. |
Lutetium is the hardest and densest of the rare earth metals. It has two stable isotopes (actually one, but another one has a half-life of over 1010 years).
Lutetium was discovered in 1907 by Georges Urbain and others, after being separated from ytterbium. This brought to a close a long period of confusion about whether the (very similar) elements ytterbium, terbium, and erbium were different, and which one was which.