| Dysprosium | |
| Electrons per shell | 2,8,18,28,8,2 |
| Electron Configuration | [Xe] 4f10 6s2 ![]() |
| Ground state | 5I8 |
| Atomic Volume | 19 cm3 mol-1 |
| Electronegativity | 1.22 |
| Magnetic ordering | Nonmagnetic at r.t., ferromagnetic under liquid nitrogen |
| Mass magnetic susceptibility | 5.45 x 10-6 |
| Molar magnetic susceptibility | 8.85625 x 10-7 |
| Speed of sound | 2710 m s-1 |
Thermal Properties |
|
| Enthalpy of Atomization | 301 kJ mol-1 @25°C |
| Enthalpy of Fusion | 17.2 kJ mol-1 |
| Enthalpy of Vaporisation | 293 kJ mol-1 |
| Heat Capacity | 27.7 J mol-1 K-1 |
| Thermal Conductivity | 10.7 W m-1 K-1 |
| Thermal Expansion | 9.9 μm m-1 K-1 |
| Critcal Temperature | No data. |
| Critcal Pressure | No data. |
| Adiabatic index | No data. |
Hardness |
|
| Brinell hardness | 500 MPa |
| Vickers hardness | 540 MPa |
Elastic Properties |
|
| Bulk modulus | 40.5 GPa |
| Poisson ratio | 0.247 |
| Shear modulus | 24.7 GPa |
| Young's modulus | 61.4 GPa |
Electrical Properties |
|
| Electrical resistivity | 9.1 x 10-7 Ω m |
| Electrical conductivity | 0.0108 106/cm Ω |
Chemical Properties |
|
| Electrochemical Equivalent | 2.021 g Ah-1 |
| Valence Electron Potential (-eV) | 47.4 |
| Ionization Potential | |
| 5.94 | |
| 11.67 | |
| 22.802 | |
Energy Levels |
|
| 45.9984 KeV | |
| 45.2078 KeV | |
| 52.119 KeV | |
| 53.3536 KeV | |
| 51.9565 KeV | |
| 6.4952 KeV | |
| 6.4577 KeV | |
| 7.2477 KeV | |
| 7.6357 KeV | |
| 7.3699 KeV | |
| 7.2023 KeV | |
| 8.4188 KeV | |
| 8.7153 KeV | |
| 6.532 KeV | |
| 5.7445 KeV | |
Atomic Radii |
|
| 175 pm | |
| 228 pm | |
| No data. | |
| No data. | |
| No data. | |
| 178.1 pm | |
Ionic Radii (Å) |
||||
| Charge | Coordination | Crystal | Ionic | Key |
| 2 | VI | 1.21 | 1.07 | |
| VII | 1.27 | 1.13 | ||
| VIII | 1.33 | 1.19 | ||
| 3 | VI | 1.052 | 0.912 | R |
| VII | 1.11 | 0.97 | ||
| VIII | 1.167 | 1.027 | R | |
| IX | 1.223 | 1.083 | 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 |
|
| Dy+3 | |
| Dy+2, Dy+4 | |
Ionisation Energies (kJ mol-1) ![]() |
|
| 571.9 | |
| 1126 | |
| 2200 | |
| 4001 | |
Vapour Pressure |
||||||
| P (Pa) | 1 | 10 | 100 | 1K | 10K | 100K |
| T (K) | 1378 | 1523 | (1704) | (1954) | (2304) | (2831) |
Crystal Structure |
|
| Hexagonal close packed | |
![]() |
a = 359.3 pm |
| b = 359.3 pm | |
| c = 565.37 pm | |
| α = 90° | |
| β = 90° | |
| γ = 120° | |