Precision machined from high purity metal, ground surfaces, and laser etched labels
Size of US Quarter
Approximate weight 10.8g
One Acrylic Case with magnetic latches
وصف
Hafnium is a chemical element with the symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. -Wikipedia Quarter and scale not included