Illinium
Description
A rare-earth element whose name was changed in 1948 to Promethium (symbol Pm).
Synonyms and Related Terms
Il
| Composition | Il (atomic no. 61) |
|---|---|
| Molecular Weight | atomic wt = 141.0 |
A rare-earth element whose name was changed in 1948 to Promethium (symbol Pm).
Il
| Composition | Il (atomic no. 61) |
|---|---|
| Molecular Weight | atomic wt = 141.0 |
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