Hafnium - WikipediaHafnium is a chemical element with symbol Hf and atomic number 72. A lustrous, silvery gray, . The chemistry of hafnium and zirconium is so similar that the two cannot be separated on the basis of .. Today, the Faculty of Science of the University of Copenhagen uses in its seal a stylized image of the hafnium atom.zirconium hafnium information,Zirconium - WikipediaZirconium is a chemical element with symbol Zr and atomic number 40. The name of zirconium .. Commercial-quality zirconium for most uses still has a content of 1% to 3% hafnium. . Commercial zirconium metal typically contains 1–2.5% of hafnium, which is not problematic because the chemical properties of hafnium and.
zirconium hafnium information