Hafnium - Definition - Law Dictionary Home Dictionary Definition hafnium

Definition :

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 17849 and has a high melting point 2227deg C It is used in nuclear reactors and incandescent lamps as a scavenger of oxygen and nitrogen See also norium