| Atomic Number: | 40 |
| Element Symbol: | Zr |
| Element Name: | Zirconium |
| Atomic Weight: | 91.224 |
| Group Number: | 4 |
| Group Name: | none |
| Period Number: | 5 |
| Block: | d-block |
| Ground State Configuration: | [Kr] 4d2 5s2 |
| Ground State Level: | 3F2 |
| Standard State: | Solid |
| Bond Length: | 317.9 |
| Atomic Radius Empirical: | 155 |
| Atomic Radius Calculated: | 206 |
| Covalent Radius Empirical: | 148 |
| Electron Affinity: | 41.1 |
| First Ionization Energy: | 640.1 |
| Pauling Electronegativity: | 1.33 |
| Sanderson Electronegativity: | 0.90 |
| Allred Rochow Electronegativity: | 1.22 |
| Density Of Solid: | 6511 |
| Molar Volume: | 14.02 |
| Velocity Of Sound: | 3800 |
| Youngs Modulus: | 68 |
| Rigidity Modulus: | 33 |
| Poissons Ratio: | 0.34 |
| Mineral Hardness: | 5.0 |
| Brinell Hardness: | 650 |
| Vickers Hardness: | 903 |
| Electrical Resistivity: | 42 |
| Melting Point: | 1855 |
| Boiling Point: | 4409 |
| Superconduction Temperature: | -272.54 |
| Thermal Conductivity: | 23 |
| Coefficient Of Linear Expansion: | 5.7 |
| Enthalpy Of Fusion: | 21 |
| Enthalpy Of Vaporization: | 580 |
| Enthalpy Of Atmization: | 605 |
| Most Common Oxidation Numbers: | 4 |
| Color: | Silvery white |
| Classification: | Metallic |
| Discovered By: | Martin Heinrich Klaproth |
| Discovered At: | Berlin, Germany |
| Discovered When: | 1789 |
| Origin Of Name: | From the Arabic word zargun meaning gold colour |
Calculate the molecular weight of Zirconium or molecular weight Zr.
Also see the full list of chemical elements and atomic weights.