HAFNIUM - Definiția din dicționar
Traducere: română
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haf"ni*um (hăf"n&ē;*ŭm or h&ä;f"n&ē;*ŭm), n. A metallic element of atomic number 72 present together with zirconium to the extent of 1% to 5% in zirconium minerals. It is a poisonous, ductile metal with a brilliant silver luster, has an atomic weight of 178.49, and has a high melting point (2227° C). It is used in nuclear reactors, and incandescent lamps as a scavenger of oxygen and nitrogen. See also
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