Hf
Hafnium Symbol (Hf)
Hafnium is element 72 of the periodic table. Copy its symbol Hf and see its atomic weight, electron configuration and physical properties.
What does Hf mean?
Hf is the chemical symbol for hafnium, element number 72 in the periodic table. Hafnium is a transition metal in group 4, period 6. It is a solid at room temperature and was discovered in 1923.
Codes and properties
| Chemical symbol | Hf |
|---|---|
| Atomic number (Z) | 72 |
| Atomic weight (PubChem) | 178.49 |
| Group / period | 4 / 6 |
| Element category | transition metal |
| Electron configuration | [Xe]6s² 4f¹⁴ 5d² |
| State at 20 °C | Solid |
| Oxidation states | +4 |
| Electronegativity (Pauling) | 1.3 |
| Melting point | 2506 K (2232.85 °C) |
| Boiling point | 4876 K (4602.85 °C) |
| Density | 13.3 g/cm³ |
| Discovered | 1923 |
How to type Hf
- Plain text: type
Hf— element symbols are ordinary Latin letters, with the first letter capitalised and the second lowercase. - Subscripts in formulas: use Unicode subscript digits (₀₁₂₃₄₅₆₇₈₉) for formulas such as H₂O — copy them from the chemistry keyboard.
- LaTeX: write
\mathrm{Hf}in math mode, or use the mhchem package:\ce{Hf}. - HTML:
Hf; for subscripts use<sub>, e.g.H<sub>2</sub>O.
Frequently asked questions
What is the chemical symbol for hafnium?
The chemical symbol for hafnium is Hf.
What is the atomic number of hafnium?
Hafnium has atomic number 72, meaning each atom has 72 protons.
What is the electron configuration of hafnium?
The ground-state electron configuration of hafnium is [Xe]6s² 4f¹⁴ 5d².
Related symbols
Keep exploring
Reference: Hafnium on PubChem (NIH)