bn:00006904n
Noun Concept
Categories: 1923 in science, Articles with short description, HCP crystal habit, Neutron poisons, Hafnium
EN
hafnium  Hf  atomic number 72  72Hf  celtium
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
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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 & Open English WordNet
Hafnium is a chemical element with the symbol Hf and atomic number 72. Wikipedia
Symbol Hf, a chemical element Wikipedia Disambiguation
Chemical element with symbol Hf and atomic number 72, steel grey transition metal. OmegaWiki
A chemical element (symbol Hf) with an atomic number of 72: a lustrous, silvery-grey tetravalent transition metal. Wiktionary
Chemical element. Wiktionary (translation)
WordNet 3.0 & Open English WordNet
Wikipedia
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Wikidata
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Wiktionary
EN
OmegaWiki
EN
Wikidata Alias