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bn:00006892n
Noun Concept
SYL
No term available
EN
A soft silvery metallic element of the rare earth group having no stable isotope; was discovered in radioactive form as a fission product of uranium WordNet 3.0
English:
element
Relations
Sources
IS A
EN
metallic element
EN
chemical element
EN
synthetic element
PART OF
EN
rare earth
EN
period 6
EN
promethium(III) oxide
EN
Promethium(III) chloride
EN
Promethium(III) phosphate
HAS KIND
EN
promethium-145
EN
promethium-146
EN
promethium-147
EN
promethium-148
EN
promethium-149
+33 relations
DESCRIBED BY SOURCE
EN
Armenian Soviet Encyclopedia
DISCOVERER OR INVENTOR
EN
Jacob A. Marinsky
EN
Lawrence E. Glendenin
EN
Charles D. Coryell
FOLLOWS
EN
neodymium
HAS QUALITY
EN
decay
LOCATION OF DISCOVERY
EN
Oak Ridge National Laboratory
NAMED AFTER
EN
Prometheus

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