Molybdenum |
| Symbol | Mo |
|---|---|
| Latin name | Molybdaneum |
| Atomic number | 42 |
| Period | 5 |
| Element category | Transition elements |
| Relative atomic mass | 95.94 |
| Group | VI.B |
| Electronegativity | 1.8 |
| Oxidation numbers | 2, 3, 4, 5, 6 |
| Electron configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d5 5s1 |
| Density [g/cm3] | 10.22 |
| State | Solid |
| Melting point [°C] | 2617 |
| Boiling point [°C] | 4650 |
| Atomic radius [pm] | 190 |
| Covalent radius [pm] | 145 |
| Thermal conductivity [W m-1K-1] | 138 |
| Heat capacity [J K-1g-1] | 0.25 |
| Discovery | 1785 |
| Hardness [Mohs scale] | 5.5 |
| Vickers hardness [MPa] | 1530 |
| Brinell hardness [MPa] | 1500 |
| Young's modulus [GPa] | 329 |
| Electrical conductivity [S m-1] | 1.73 · 107 |
| Shear modulus [GPa] | 20 |
| 1.st ionization energy [eV] | 7.0924 |
| 2.nd ionization energy [eV] | 16.461 |
| 3.rd ionization energy [eV] | 27.16 |
| Stable isotopes | 7 |
| Unstable isotopes | 13 |