 |
| Name |
ruthenium |
| Symbol |
Ru |
| Atomic Weight |
101.07 |
| Atomic Number |
44 |
| CAS ID |
7440-18-8 |
| Group Number |
8 |
| Group Name |
Precious Metal |
| Period Number |
5 |
| Origin of Name |
Latin, Ruthenia = "Russia." |
| Year Discovered |
1808 |
| Discovery Credits |
Discovered by J. A. Sinadecki at University of Vilno,
Poland. Rediscovered in 1828 by G. W. Osann at University of Tartu,
Russia. |
| Class |
Metallic |
| Color |
Silvery White |
| Standard State |
Solid at 77 F & 298 K |
| Description |
Lustrous, silvery metal of the platinum group. Unaffected by
air, water and acids but dissolves in molten alkali. Used to harden Pt and
Pd, and as a catalyst. Diagnostic tests:
There are no simple chemical tests for ruthenium. The element is usually
found as an alloy or a sulfide mineral with other platinum group metals. Atomic Absorption
Spectroscopy is used for quantitative analysis and Energy Dispersive
Analysis of X-rays (EDAX) is used for qualitative analysis.
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