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bn:00006904n
Noun Concept
SYL
No term available
EN
A grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons WordNet 3.0
English:
element
Relations
Sources
IS A
EN
metallic element
EN
chemical element
EN
transition metal
PART OF
EN
hafnium diboride
EN
period 6
EN
group 4
EN
hafnium(IV) carbide
EN
hafnium(IV) oxide
+34 relations
HAS KIND
EN
hafnium-176
EN
hafnium-177
EN
hafnium-178
EN
hafnium-179
EN
hafnium-180
+32 relations
DESCRIBED BY SOURCE
EN
Armenian Soviet Encyclopedia
DISCOVERER OR INVENTOR
George de Hevesy
Dirk Coster
LOCATION OF DISCOVERY
EN
Denmark
NAMED AFTER
EN
Copenhagen

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