 |
| Name |
lutetium |
| Symbol |
Lu |
| Atomic Weight |
174.967 |
| Atomic Number |
71 |
| CAS ID |
7439-94-3 |
| Group Number |
3 |
| Group Name |
(none) |
| Period Number |
6 |
| Origin of Name |
From the Latin, Lutetia = "Paris." |
| Year Discovered |
1907 |
| Discovery Credits |
Discovered by G. Urnain at Paris, France, and independently
by C. James at the University of New Hampshire, USA. |
| Class |
Metallic |
| Color |
Silvery White |
| Standard State |
Solid at 77 F & 298 K |
| Description |
Hardest, densest, and one of the rarest of the lanthanide
metals. Little used except in research. Diagnostic tests:
There are no simple diagnostic tests to identify lutetium.
X-ray fluorescence spectroscopy is commonly employed to identify and
analyze members of the Rare-Earth group elements.
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