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 |