A grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals, used in filaments for its ready emission of electrons
English: hafnium, Hf, atomic number 72
hafniumEnglish
Hf, atomic number 72, hafnium
Hf, atomic number 72, hafnium
English: hafnium, Hf, atomic number 72