• Class: Heavy Lanthinides
• Period: 6
• IUPAC group: 3
• Traditional: IIIa

• Discovered in: 1886 by de Boisbaudran
• Origin of name: Greek: dysprositos, (hard to get at)
• Historical or alternate name:

Xenotime, fergusonite, gadolinite, euxenite, polycrase & blomstrandine

Silvery hard metal. Reacts with Oxygen. Reacts rapidly with water; dissolves in acids.

• Atmosphere: ~0.0 ppm
• Primitive mantle: 0.572 ppm
• Sea water: 2e-7 ppm
• Metallic meteorite: 0.242 ppm
• ConTinental crust: 3.6 ppm
• Solar photosphere: 1.06 log of abundance
• Oceanic crust: 5.7 ppm
• Solar system: 0.398 relative to Si=1.0e6

   Hazards

Metal ignites and burns readily. Reductant..

• Lower:
• Upper:

Dysprosium Physical Properties

 Transitional Data

• State: Solid
• Density: 8.5500 g/cm3

 Molar enthalpy

• Atomization: 293.05 kJ mol-1
• Fusion: 17.2 kJ mol-1
• Vaporization: 293 kJ mol-1

 Transition points

• MelTing point: 1685.0 K
• Boiling point: 2835.0 K
• Critical temperature: 7640.0 K

 Molar properties

• Atomic weight: 162.50 g/mole
• Molar volume: 19.123 cm3 mol-1

 Crystal structure sequence

hexagonal-close-packed <1243 K < face-centered-cubic < melTing point

 Thermodynamics

• State: solid
  • Enthalpy 0
  • Gibbs function 0
  • Entropy 74.77
  • Heat Capacity 28.16

• State: gas
  • Enthalpy 290.4
  • Gibbs function 254.4
  • Entropy 196.63
  • Heat Capacity 20.79

 Miscellaneous physical

• Electrical resistivity: 57.0 µ-ohms/cm
• Debye temperature: 210.0 K
• Thermal conductivity: 10.7 W / m / K
• Coefficient of linear expansion: 9.6Coef. per K
• Mass magnetic susceptibility: 8.00e-6
• X-ray diffraction mass absorption coefficients:
• CuK: 236 (µ/p)/cm2 g-1
• MoK: 70.6 (µ/p)/cm2 g-1

Dysprosium Chemical Properties

 Chemical basics:

• Oxidation states: +2 +3
• Molecular wt: 162.50 g/mole

 Radii

• Covalent: 159 pm
• Atomic: 178.1 pm
• Van der Waals: pm

 Ions:

• ion: +2 pm 107.0
• ion: +3 pm 91.2

 Covalent bonds

 Effective nuclear charge

• Slater: 2.85
• Clementi: 8.34
• Froese-Fischer: 11.49

 Electronegativity

• Pauling:
• Allred-Rochow: 1.10

 Standard reactions

Dysprosium Nuclear Properties

• Known 21
• Listed 11

• Known 149 - 167
• Listed 154 - 164

• % Occ.:Natural
• Mossbauer NRA:
• Nuclear spin/Quantum no.:
• Radioisotopes:
  • Half-life: 10.0 E6 years
  • Decay mode: alpha,
  • Source: reactor
• Notes

• % Occ.:Natural 0.06%
• Mossbauer NRA:
• Nuclear spin/Quantum no.:
• Radioisotopes:
  • Half-life:
  • Decay mode:
  • Source:
• Notes

• % Occ.:Natural 0.10%
• Mossbauer NRA:
• Nuclear spin/Quantum no.:
• Radioisotopes:
  • Half-life:
  • Decay mode:
  • Source:
• Notes

• % Occ.:Natural
• Mossbauer NRA:
• Nuclear spin/Quantum no.:
• Radioisotopes:
  • Half-life: 144.0 days
  • Decay mode: E.C.,
  • Source: reactor
• Notes

• % Occ.:Natural 2.34%
• Mossbauer NRA: 13.90
• Nuclear spin/Quantum no.:
• Radioisotopes:
  • Half-life:
  • Decay mode:
  • Source:
• Notes

• % Occ.:Natural 18.90%
• Mossbauer NRA: 4.12
• Nuclear spin/Quantum no.: 5/2
• Radioisotopes:
  • Half-life:
  • Decay mode:
  • Source:
• Notes

• % Occ.:Natural
• Mossbauer NRA: 7.02
• Nuclear spin/Quantum no.:
• Radioisotopes:
  • Half-life:
  • Decay mode:
  • Source:
• Notes

• % Occ.:Natural
• Mossbauer NRA: 12.00
• Nuclear spin/Quantum no.:
• Radioisotopes:
  • Half-life:
  • Decay mode:
  • Source:
• Notes

• % Occ.:Natural 25.50%
• Mossbauer NRA: 12.90 *
• Nuclear spin/Quantum no.:
• Radioisotopes:
  • Half-life:
  • Decay mode:
  • Source:
• Notes

• % Occ.:Natural 24.90%
• Mossbauer NRA:
• Nuclear spin/Quantum no.: 5/2
• Radioisotopes:
  • Half-life:
  • Decay mode:
  • Source:
• Notes

• % Occ.:Natural 28.20%
• Mossbauer NRA: 11.80
• Nuclear spin/Quantum no.:
• Radioisotopes:
  • Half-life:
  • Decay mode:
  • Source:
• Notes

• Isotope Cross-section 90±20 barns

• Absolute sensitivity: 7.87e-5 1H=1.0
• Relative sensitivity: 4.17e-4 1H=1.0
• Receptivity: 0.509 13C=1.0
• Magnetogyric ratio: -0.9206e7 rad / T / s
• Quadropole moment: 1.4e-28 m2
• Frequency: 3.294 MHz
• Reference:

Dysprosium Energy Properties

Electrons

• Ground state electron configuration: [Xe] 4f10 6s2
• Electron affinity: kJ mol-1
• Filling orbitals:

Spectral lines

 Ionization energies

 Atomic energy levels