 |
| Name |
holmium |
| Symbol |
Ho |
| Atomic Weight |
164.9.032 |
| Atomic Number |
67 |
| CAS ID |
7440-60-0 |
| Group Number |
|
| Group Name |
Lanthanoid |
| Period Number |
6 |
| Origin of Name |
Latin, Holinia = "Stockholm." |
| Year Discovered |
1878 |
| Discovery Credits |
Discovered by P. T. Cleve at
Uppsala, Sweden and independently by M. Delafontaine and J. L. Soret at Geneva,
Switzerland |
| Class |
Metallic |
| Color |
Silvery White |
| Standard State |
Solid at 77 F & 298 K |
| Description |
Silvery metal of the rare earth group. Slowly attacked by
oxygen and water, dissolves in acid. Used as flux concentrator for high
magnetic fields. Diagnostic tests:
There are no simple diagnostic tests to identify holmium.
X-ray fluorescence spectroscopy is commonly employed to identify and
analyze members of the Rare-Earth group elements.
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