Hafnium (Hf)
"The Neutron Ninja, silently absorbing danger to keep nuclear power in check, while its super-tough alloys reinforce the frontiers of technology."
A memorable persona to anchor Hf in your mind.
13.31
Grams per cm³
2233
Celsius (°C)
212
Radius (pm)
Daily Life Link
The hidden guardian inside nuclear power plants, keeping energy safe.
Discovery & History
Year Discovered
1923
Discovered By
Dirk Coster & George de Hevesy
Origin of Name
"The name is derived from the Latin name for Copenhagen, ''Hafnia''"
Technical Properties
Atomic Mass
178.486 u
Standard State
solid
Boiling Point
4600°C
Electron Configuration
[Xe] 4f145d26s2
1st Ionization Energy
6.825 eV
Electron Affinity
N/A
Oxidation States
"A gleaming, silver-gray metal, tough as nails and smooth to the touch."
Did You Know?
The Late Bloomer: Hafnium was one of the last stable elements discovered, only identified in 1923! Why so late? It's incredibly similar to Zirconium.
Copenhagen's Child: Its name comes from 'Hafnia,' the Latin word for Copenhagen, Denmark, where it was first identified by Dirk Coster and George de Hevesy.
Elemental Twin: Imagine trying to find one twin in a crowd when they look IDENTICAL! Hafnium and Zirconium are chemical twins, making Hf super tough to isolate and identify for centuries.
Neutron Ninja: Hafnium's absolute superpower is its ability to absorb neutrons like a sponge! This makes it the ultimate 'control freak' for nuclear reactors, preventing meltdowns.