| Promethium
|
| Name | Promethium
|
| Symbol | Pm
|
| Atomic number | 61
|
| Atomic mass | 145 amu
|
| Normal state
| Solid
|
| Classification
| Metallic
|
| Crystal structure
| Hexagonal
|
| Color
| Silvery / Metallic
|
| Date of discovery
| 1945
|
| Name of discoverer
| J.A. Marinsky, L.E. Glendenin and C.D. Coryell
|
| Name origin
| From Prometheus who stole the fire of the sky and gave it to mankind.
|
| Uses
| Used in highly specialized miniature batteries.
|
| Obtained from
| All the promethium originally present when the Earth formed has disappeared due to radioactive decay. Only very small trace amounts are found in uranium ores as a product of nuclear fission.
|
