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Atomic: M.A.C. | Reference
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Ytterbium
Electrons per shell 2,8,18,32,8,2
Electron Configuration [Xe] 4f13 6s2 open electron config
Ground state 1S0
Atomic Volume 24.79 cm3 mol-1
Electronegativity 1.1
Magnetic ordering No data
Mass magnetic susceptibility 5.9 x 10-9
Molar magnetic susceptibility 1.02 x 10-9
Speed of sound 1590 m s-1
Thermal Properties
Enthalpy of Atomization 180 kJ mol-1 @25°C
Enthalpy of Fusion 9.2 kJ mol-1
Enthalpy of Vaporisation 159 kJ mol-1
Heat Capacity 26.74 J mol-1 K-1
Thermal Conductivity 38.5 W m-1 K-1
Thermal Expansion 26.3 μm m-1 K-1
Hardness
Brinell hardness 343 MPa
Vickers hardness 206 MPa
Elastic Properties
Bulk modulus 30.5 GPa
Poisson ratio 0.207
Shear modulus 9.9 GPa
Young's modulus 23.9 GPa
Electrical Properties
Electrical resistivity 2.8 x 10-7 Ω m
Electrical conductivity 0.0351 106/cm Ω
Chemical Properties
Electrochemical Equivalent 2.152 g Ah-1
Valence Electron Potential (-eV) 50.3
Ionization Potential  
First 6.254
Second 12.188
Third 25.03
Energy Levels
Kα1 (intensity 100) 52.3889 KeV
Kα2 (intensity 50) 51.354 KeV
Kβ1 (intensity 24.5) 59.37 KeV
Kβ2 (intensity 9.3) 60.6059 KeV
Kβ3 (intensity 9.7) 59.2294 KeV
Lα1 (intensity 100) 7.4156 KeV
Lα2 (intensity 10) 7.3673 KeV
Lβ1 (intensity 41) 8.4018 KeV
Lβ2 (intensity 17) 8.7588 KeV
Lβ3 (intensity 6.7) 8.5337 KeV
Lβ4 (intensity 4) 8.3106 KeV
Lγ1 (intensity 5.5) 9.7801 KeV
Lγ2 (intensity 2) 10.0933 KeV
Lγ3 (intensity 2) 7.578 KeV
Ll (intensity 5.5) 6.5427 KeV
Atomic Radii
Empirical 175 pm
Bohr Radius 222 pm
Covalent Radius No data.
Van der Waals No data.
Triple covalent No data.
Metallic 193.3 pm
Oxidation States
Main Yb+2, Yb+3
Other
Ionisation Energies (kJ mol-1) show graph
M - M+ 603.4
M+ - M2+ 1176
M2+ - M3+ 2415
M3+ - M4+ 4220
Vapour Pressure
P (Pa) 1 10 100 1K 10K 100K
T (K) 736 813 910 1047 (1266) (1465)
Crystal Structure
Structure Cubic close packed
a = 548.47 pm
b = 548.47 pm
c = 548.47 pm
α = 90°
β = 90°
γ = 90°