Zirconium
Electron Configuration
|
General Properties
| Atomic Symbol | Zr |
| Atomic Weight | 91.224 g/mol |
| Element Number | 40 |
| Standard State | Solid |
| Standard Type | Strongly Basic |
| Date of Discovery | 1789 |
| Discoverer | Klaproth |
Physical Properties
| Oxidation States | 4 |
| Boiling Point | 4682 K |
| Melting Point | 2128 K |
| Density | 6.51 g/cm³ |
| Electron Configuration | [Kr]4d2,5s2 |
| Acid/Base Properties | Amphoteric |
| Crystal Structure | Hexagonal |
| Electronegativity | 1.33 |
| Heat of Vaporization | 590.5 kJ/mol |
| Heat of Fusion | 21 kJ/mol |
| Electrical Conductivity | 2.3 10^6omg-¹cm-¹ |
| Thermal Conductivity | 22.7 Wm-¹K-¹ (at 300 K) |
| Specific Heat Capacity | 0.278 Jg-¹K-¹ (at 300 K) |
| First Ionization Potential | 6.84 |
| Atomic Volume | 14.10 cm³/mol |
| Atomic Radius | 1.60 Å |
| Covalent Radius | 1.45 Å |
| Synthetic | No |