 |
| Name |
gadolinium |
| Symbol |
Gd |
| Atomic Weight |
157.25 |
| Atomic Number |
64 |
| CAS ID |
7440-54-2 |
| Group Number |
|
| Group Name |
Lanthanoid |
| Period Number |
6 |
| Origin of Name |
Named after J. Gadolin, a Finnish chemist. |
| Year Discovered |
1880 |
| Discovery Credits |
Discovered by J. C. Galissard de Marignac at Geneva,
Switzerland. Isolated in 1886 by P. E. Lecoq de Boisbaudran at Paris,
France. |
| Class |
Metallic |
| Color |
Silvery White |
| Standard State |
Solid at 77 F & 298 K |
| Description |
Silvery-white metal of rare earth group. Reacts slowly with
oxygen and water, dissolves in acids. Used in magnets, electronics,
neutron radiography, and alloys, with iron for magneto-optic recording
devices. Diagnostic tests:
There are no simple diagnostic tests to identify gadolinium.
X-ray fluorescence spectroscopy is commonly employed to identify and
analyze members of the Rare-Earth group elements.
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