72Hf
Element 72
Hafnium
Transition metals
Hafnium is a chemical element with symbol Hf and atomic number 72.
Key data
- Atomic number
- 72
- Atomic mass
- 178.492 u
- Group / Period
- 4 / 6
- Block
- d-block
- Phase at STP
- Solid
- Density
- 13.31 g/cm³
- Melting point
- 2232.8 °C
- Boiling point
- 4602.9 °C
- Electron configuration
- [Xe] 4f14 5d2 6s2
Common uses
- •Nuclear control rods
- •Plasma cutting
- •Microchips
Discovery
Year: 1923
Discovered by: Dirk Coster
Frequently asked questions
What is the atomic number of Hafnium?
Hafnium has atomic number 72. Its symbol is Hf and its atomic mass is 178.492 u.
What category of element is Hafnium?
Hafnium is classified as transition metals. It sits in group 4, period 6 of the periodic table.
What is Hafnium used for?
Common uses of Hafnium include: Nuclear control rods, Plasma cutting, Microchips.
When was Hafnium discovered?
Hafnium was discovered in 1923 by Dirk Coster.
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