72
Hf
Hafnium
Hafnium
Hafnium (Hf)
Transition Metals · Solid · Period 6 · Group 4
Element Properties
- Atomic Number
- 72
- Symbol
- Hf
- Atomic Mass
- 178.49
- Category
- Transition Metals
- Standard State
- Solid
- Period
- 6
- Group
- 4
- Electronegativity
- 1.3
- Atomic Radius
- 212
- Ionization Energy
- 6.83
- Electron Affinity
- —
- Oxidation States
- +4
- Melting Point
- 2506 K (2232.85 °C)
- Boiling Point
- 4876 K (4602.85 °C)
- Density
- 13.3
- Electron Configuration
- [Xe]6s2 4f14 5d2
- Year Discovered
- 1923
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Frequently asked questions
What is the atomic number of Hafnium?
The atomic number of Hafnium is 72, which equals the number of protons in its nucleus.
What is the atomic mass of Hafnium?
The atomic mass of Hafnium is approximately 178.49 u (one twelfth of the mass of a carbon-12 atom).
What is the electron configuration of Hafnium?
The electron configuration of Hafnium is [Xe]6s2 4f14 5d2.
Where is Hafnium in the periodic table?
Hafnium is located in period 6, group 4.
When was Hafnium discovered?
Hafnium was discovered in 1923.