Isotopes | Compounds | Main Page
Molybdenum
Electron Configuration 2,8,18,13,1
Electron Configuration [Kr] 4d5 5s1
Electronegativity 2.16
Enthalpy of Fusion 27.6 kJ mol-1
Enthalpy of Vaporisation 589.9 kJ mol-1
Heat Capacity 24.06 J mol-1 K-1
Thermal Conductivity 138 W m-1 K-1
Thermal Expansion 4.8 μm m-1 K-1
Magnetic ordering No data
Electrical resistivity 53.4 Ω m
Speed of sound 5400 m s-1
Young's modulus 329 GPa
Shear modulus 5400 GPa
Bulk modulus 230 GPa
Poisson ratio 0.31
Mohs hardness 5.5
Vickers hardness 1530 MPa
Brinell hardness 1500 MPa
Atomic Radii
Atomic Radius 145 pm
Bohr Radius 190 pm
Covalent Radius 145 pm
Van der Waals 0 pm
Oxidation States
Main Mo+6
Other Mo-2, Mo0, Mo+1, Mo+2, Mo+3, Mo+4, Mo+5
Ionisation Energies (kJ mol-1) show graph
M - M+ 685
M+ - M2+ 1558
M2+ - M3+ 2621
M3+ - M4+ 4480
M4+ - M5+ 5900
M5+ - M6+ 6560
M6+ - M7+ 12230
M7+ - M8+ 14800
M8+ - M9+ 16800
M9+ - M10+ 19700