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Chemical element: Manganese (Mn)
| Atomic Number: | 25 |
| Element Symbol: | Mn |
| Element Name: | Manganese |
| Atomic Weight: | 54.938049 |
| Group Number: | 7 |
| Group Name: | none |
| Period Number: | 4 |
| Block: | d-block |
| Ground State Configuration: | [Ar] 3d5 4s2 |
| Ground State Level: | 6S5/2 |
| Standard State: | Solid |
| Bond Length: | 273.1 |
| Atomic Radius Empirical: | 140 |
| Atomic Radius Calculated: | 161 |
| Covalent Radius Empirical: | 139 |
| First Ionization Energy: | 717.3 |
| Pauling Electronegativity: | 1.55 |
| Sanderson Electronegativity: | 2.20 |
| Allred Rochow Electronegativity: | 1.60 |
| Density Of Solid: | 7470 |
| Molar Volume: | 7.35 |
| Velocity Of Sound: | 5150 |
| Youngs Modulus: | 198 |
| Bulk Modulus: | 120 |
| Mineral Hardness: | 6.0 |
| Brinell Hardness: | 196 |
| Electrical Resistivity: | 160 |
| Melting Point: | 1246 |
| Boiling Point: | 2061 |
| Thermal Conductivity: | 7.8 |
| Coefficient Of Linear Expansion: | 21.7 |
| Enthalpy Of Fusion: | 13.2 |
| Enthalpy Of Vaporization: | 220 |
| Enthalpy Of Atmization: | 281 |
| Most Common Oxidation Numbers: | 7,4,2 |
| Color: | Silvery metallic |
| Classification: | Metallic |
| Discovered By: | Johann Gahn |
| Discovered At: | Sweden |
| Discovered When: | 1774 |
| Origin Of Name: | From the Latin word magnes meaning magnet, or magnesia nigri meaning black magnesia (MnO2) |
Calculate the molecular weight of Manganese or molecular weight Mn.
Also see the full list of chemical elements and atomic weights.
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