| Atomic Number: | 26 |
| Element Symbol: | Fe |
| Element Name: | Iron |
| Atomic Weight: | 55.845 |
| Group Number: | 8 |
| Group Name: | none |
| Period Number: | 4 |
| Block: | d-block |
| Ground State Configuration: | [Ar] 3d6 4s2 |
| Ground State Level: | 5D4 |
| Standard State: | Solid |
| Bond Length: | 248.2 |
| Atomic Radius Empirical: | 140 |
| Atomic Radius Calculated: | 156 |
| Covalent Radius Empirical: | 125 |
| Electron Affinity: | 15.7 |
| First Ionization Energy: | 762.5 |
| Pauling Electronegativity: | 1.83 |
| Sanderson Electronegativity: | 2.20 |
| Allred Rochow Electronegativity: | 1.64 |
| Density Of Solid: | 7874 |
| Molar Volume: | 7.09 |
| Velocity Of Sound: | 4910 |
| Youngs Modulus: | 211 |
| Rigidity Modulus: | 82 |
| Bulk Modulus: | 170 |
| Poissons Ratio: | 0.29 |
| Mineral Hardness: | 4.0 |
| Brinell Hardness: | 490 |
| Vickers Hardness: | 608 |
| Electrical Resistivity: | 9.7 |
| Reflectivity: | 65 |
| Melting Point: | 1538 |
| Boiling Point: | 2861 |
| Thermal Conductivity: | 80 |
| Coefficient Of Linear Expansion: | 11.8 |
| Enthalpy Of Fusion: | 13.8 |
| Enthalpy Of Vaporization: | 347 |
| Enthalpy Of Atmization: | 415 |
| Most Common Oxidation Numbers: | 3,2 |
| Color: | Lustrous, metallic, greyish tinge |
| Classification: | Metallic |
| Discovered By: | Known since ancient times |
| Discovered At: | not known |
| Origin Of Name: | From the Anglo-Saxon word iron or iren (the origin of the symbol Fe comes from the Latin word ferrum meaning iron). Possibly the word iron is derived from earlier words meaning holy metal because it was used to make the swords used in the Crusades. |
Calculate the molecular weight of Iron or molecular weight Fe.
Also see the full list of chemical elements and atomic weights.