Name:
Promethium
Symbol:
Pm
Atomic Number:
61
Atomic Mass:
(145)
Atomic Volume:
??? cc/mol
Discovered By:
First manufactured by Law in 1941
Discovery Date:
1941
Origin of Name:
Promethium - named for Prometheus, who stole fire from heaven in Roman mythology
Toxicity:
???
Summary:
Not found naturally on earth. First predicted by Branner in 1902. Manufactured by nuclear bombardment.
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