Zr
Zirconium Symbol (Zr)
Zirconium is element 40 of the periodic table. Copy its symbol Zr and see its atomic weight, electron configuration and physical properties.
What does Zr mean?
Zr is the chemical symbol for zirconium, element number 40 in the periodic table. Zirconium is a transition metal in group 4, period 5. It is a solid at room temperature and was discovered in 1789.
Codes and properties
| Chemical symbol | Zr |
|---|---|
| Atomic number (Z) | 40 |
| Atomic weight (PubChem) | 91.22 |
| Group / period | 4 / 5 |
| Element category | transition metal |
| Electron configuration | [Kr]5s² 4d² |
| State at 20 °C | Solid |
| Oxidation states | +4 |
| Electronegativity (Pauling) | 1.33 |
| Melting point | 2128 K (1854.85 °C) |
| Boiling point | 4682 K (4408.85 °C) |
| Density | 6.52 g/cm³ |
| Discovered | 1789 |
How to type Zr
- Plain text: type
Zr— 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{Zr}in math mode, or use the mhchem package:\ce{Zr}. - HTML:
Zr; for subscripts use<sub>, e.g.H<sub>2</sub>O.
Frequently asked questions
What is the chemical symbol for zirconium?
The chemical symbol for zirconium is Zr.
What is the atomic number of zirconium?
Zirconium has atomic number 40, meaning each atom has 40 protons.
What is the electron configuration of zirconium?
The ground-state electron configuration of zirconium is [Kr]5s² 4d².
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Reference: Zirconium on PubChem (NIH)