 |
| Name |
tantalum |
| Symbol |
Ta |
| Atomic Weight |
180.9479 |
| Atomic Number |
73 |
| CAS ID |
7440-25-7 |
| Group Number |
5 |
| Group Name |
(none) |
| Period Number |
6 |
| Origin of Name |
Greek, Tantalos = father of Niobe. |
| Year Discovered |
1802 |
| Discovery Credits |
Discovered by A. G. Eceberg at Uppsala, Sweden. |
| Class |
Metallic |
| Color |
Gray Blue |
| Standard State |
Solid at 77 F & 298 K |
| Description |
Shiny, silvery metal, soft when pure. Very corrosion resistant due to oxide film; attacked by HF and fused alkalis. Used in
electronics as tantalum capacitors, cutting tools, chemical plants and surgery. Diagnostic tests:
There are no simple tests to detect tantalum. Most
flux reactions are not very good. Absorption Spectroscopy is used for
quantitative analysis and Energy Dispersive Analysis of X-rays (EDAX) is
used for qualitative analysis.
|
Back to Elements Table Page
| |
