Zirconium
Transition metal| Atomic number | 40 |
|---|---|
| Category | Transition metal |
| Atomic mass | 91.224 |
| Electron configuration | [Kr]4d² 5s² |
| Oxidation states | +4 |
| Electronegativity | 1.33 |
| Melting point | 1,855 °C |
| Boiling point | 4,409 °C |
| Density | 6.52 g/cm³ |
| Crystal structure | Close-packed hexagonal |
| Group | 4 |
| Period | 5 |
| Block | d |
| Discovered | 1,789 |
| Crustal abundance | 165 ppm |
