Zr(Atomic Number : 40)

1. Introduce – A metal that belongs to a group of four on the periodic table called the titanium group, along with titanium and hafnium – The metal itself is relatively reactive, but a protective film of zirconium dioxide is formed in air, making it highly corrosion resistant – In nature, it is always accompanied by hafnium(Hf) – Zr alloying element effects : improved heat resistance, corrosion resistance * Zr and Hf – Zr is always accompanied by Hf in nature – Zr has nearly the same electron and ionic radii as Hf, and other properties such as density, trans...