Hafnium has 72 protons, 72 electrons, 106 neutrons, 4 valence electrons, and 6 energy levels/shells.

The discoverer of Hafnium was Dirk Coster. They discovered it in 1922. They found it in Copenhagen.

LOCATION OF HAFNIUM ON PERIODIC TABLE

• Group - 4B
• Type of Group - Transition Metals
• Period - 6
• Metalloid

Hafnium gets its name from the Latin for Copenhagen, where it was discovered. Hafnium is used for compounding with iron, titanium, niobium and other metals. The metal is used for nuclear control rods and is an efficient for combining oxygen and nitrogen. It is used in gas-filled and electric lamps.