Difference between revisions of "Promethium"
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Revision as of 07:13, 24 July 2013
Description
A radioactive, rare-earth element with an atomic number of 61. Prior to 1948, this element was called illinium. Promethium is a silvery-white metal that is recovered from spent uranium fission products. It is used in luminescent paint, x-ray sources and nuclear auxiliary power generators.
Synonyms and Related Terms
Pm; illinium
| Composition | Pm (atomic no. 61) |
|---|---|
| Melting Point | 1160 |
| Density | 7.2 |
| Molecular Weight | atomic wt = 147 |
Hazards and Safety
Strong radioactive poison.