Protons/Electrons: 72Neutrons: 106Shell structure: 2,8,18,32,10,2Electron configuration: [Xe]4f145d26s2Oxidation state: 4Crystal structure: hexagonal While using X-ray spectroscopy to study the arrangements of the outer electrons within atoms in samples of zirconium ore, D. Coster and G. ...
a chemical element that has seventy-two protons in each nucleus and that occurs as a tetravalent metal often found in combination with zirconium, used in pure form for applications such as nuclear reactor control rods because it absorbs neutrons well. (symbol: Hf) ...
–Number of Electrons72 –Number of Neutrons108 –Number of Protons72 Energy Levels6 –First Energy Level2 –Second Energy Level8 –Third Energy Level18 –Fourth Energy Level32 –Fifth Energy Level10 –Sixth Energy Level2 Ionic ChargeUnknown ...