Hafnium (Hf) Fun Facts

72 Hf
Superhero Identity

"The Zirconium Twin, a hero almost identical to its twin, tasked with controlling nuclear reactions in submarines."

The true essence of Hafnium (Hf) on the molecular frontier.

Appearance

Hafnium is a lustrous, silvery, ductile metal.

Everyday Connection

Hafnium is found in the control rods in a nuclear submarine�s reactor.

In Pop Culture

Hafnium is so similar to zirconium that it was the second-to-last stable element to be discovered.

Revision Hub

Master the elements with smart drills and quick revision sheets.

Revise

Did You Know?

1

It was one of the last stable (non-radioactive) elements to be discovered, in 1923.

2

Its chemical properties are so similar to zirconium that it is extremely difficult to separate the two. For this reason, zirconium metal always contains a small amount of hafnium unless it has been highly purified.

3

Hafnium is excellent at absorbing neutrons, so it is used to make control rods for nuclear submarines.

4

It is named after Hafnia, the Latin name for Copenhagen, the city where it was discovered.

5

The filament in plasma cutting torches is often made from hafnium because it can withstand the incredibly high temperatures.