| Ytterbium | |
| Electrons per shell | 2,8,18,32,8,2 |
| Electron Configuration | [Xe] 4f13 6s2 ![]() |
| 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 |
| Critcal Temperature | No data. |
| Critcal Pressure | No data. |
| Adiabatic index | No data. |
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 | |
| 6.254 | |
| 12.188 | |
| 25.03 | |
Energy Levels |
|
| 52.3889 KeV | |
| 51.354 KeV | |
| 59.37 KeV | |
| 60.6059 KeV | |
| 59.2294 KeV | |
| 7.4156 KeV | |
| 7.3673 KeV | |
| 8.4018 KeV | |
| 8.7588 KeV | |
| 8.5337 KeV | |
| 8.3106 KeV | |
| 9.7801 KeV | |
| 10.0933 KeV | |
| 7.578 KeV | |
| 6.5427 KeV | |
Atomic Radii |
|
| 175 pm | |
| 222 pm | |
| No data. | |
| No data. | |
| No data. | |
| 193.3 pm | |
Ionic Radii (Å) |
||||
| Charge | Coordination | Crystal | Ionic | Key |
| 2 | VI | 1.16 | 1.02 | |
| VII | 1.22 | 1.08 | E | |
| VIII | 1.28 | 1.14 | ||
| 3 | VI | 1.008 | 0.868 | R* |
| VII | 1.065 | 0.925 | E | |
| VIII | 1.125 | 0.985 | R | |
| IX | 1.182 | 1.042 | R | |
| R, From r3 vs V plots. |
| C, Calculated from bond length - bond strength equations. |
| E, Estimated. |
| *, Most Reliable. |
| M, From Metallic Oxides. |
| A, Ahrens (1952) Ionic radius. |
| P, Pauling's (1960) Crystal Radius. |
Oxidation States |
|
| Yb+2, Yb+3 | |
Ionisation Energies (kJ mol-1) ![]() |
|
| 603.4 | |
| 1176 | |
| 2415 | |
| 4220 | |
Vapour Pressure |
||||||
| P (Pa) | 1 | 10 | 100 | 1K | 10K | 100K |
| T (K) | 736 | 813 | 910 | 1047 | (1266) | (1465) |
Crystal Structure |
|
| Cubic close packed | |
![]() |
a = 548.47 pm |
| b = 548.47 pm | |
| c = 548.47 pm | |
| α = 90° | |
| β = 90° | |
| γ = 90° | |