Hafnium


 * Element Name:** Hafnium


 * Element Symbol:** Hf


 * Atomic Mass:** 178[[image:Hafnium_Rhainyl.png width="216" height="288" align="right"]]


 * Atomic Number:** 72


 * Protons:** 72


 * Electrons:** 72


 * Discovery:** Dirk Coster (Danish Chemist) and Charles de Hevesy (Hungarian Chemist) in 1923.


 * How It Was Named:** Named after the Latin word for Copenhagen, Hafina.


 * State of Matter:** Solid


 * Melting Point:** 2233°C


 * Boiling Point:** 4603°C


 * Characteristics:**
 * Silver
 * Steel
 * Ductile Metal


 * Uses of Element:** Used in vacuum tubes as a getter. Also used as control rods in nuclear reactors.


 * Interesting Facts:**
 * Corrosion resistant
 * Zirconium and Hafnium are difficult to separate.

media type="youtube" key="egw79BA_0PA" height="390" width="640" align="center"