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Periodic Table of Elements

Element Dysprosium – Dy

Comprehensive data on the chemical element Dysprosium is provided on this page; including scores of properties, element names in many languages, most known nuclides of Dysprosium. Common chemical compounds are also provided for many elements. In addition technical terms are linked to their definitions and the menu contains links to related articles that are a great aid in one studies. Using the "Periodic Table of Elements Quick Navigation" graphic at the bottom of the sidebar menu, one can quickly jump from chemical element to chemical element.

Dysprosium Menu

• Dysprosium Page One
  • Overview of Dysprosium
  • Dysprosium's Name in Other Languages
  • Atomic Structure of Dysprosium
  • Chemical Properties of Dysprosium
  • Physical Properties of Dysprosium
  • Regulatory / Health
  • Who/When/Where/How
• Dysprosium Page Two
  • Nuclides / Isotopes
  • Potential Parent Nuclides

Overview of Dysprosium

Dysprosium's Name in Other Languages

• Latin: Dysprosium
• Czech: Dysprosium
• Croatian: Disprozij
• French: Dysprosium
• German: Dysprosium -s
• Italian: Disprosio
• Norwegian: Dysprosium
• Portuguese: Disprósio
• Russian:
• Spanish: Disprósio
• Swedish: Dysprosium

Atomic Structure of Dysprosium

• Atomic Radius: 2.49Å
• Atomic Volume: 19cm³/mol
• Covalent Radius: 1.59Å
• Cross Section (Thermal Neutron Capture)_a/barns: 920
• Crystal Structure: Hexagonal

  

• Electron Configuration:

  1s² 2s²p⁶ 3s²p⁶d¹⁰ 4s²p⁶d¹⁰f¹⁰ 5s²p⁶ 6s²

• Electrons per Energy Level: 2,8,18,28,8,2

  Shell Model
  

• Ionic Radius: 0.912Å
• Filling Orbital: 4f¹⁰
• Number of Electrons (with no charge): 66
• Number of Neutrons (most common/stable nuclide): 96
• Number of Protons: 66
• Oxidation States: 3
• Valence Electrons: 4f¹⁰ 6s²

Chemical Properties of Dysprosium

• Electrochemical Equivalent: 2.021g/amp-hr
• Electron Work Function:
• Electronegativity: 1.22 (Pauling); 1.1 (Allrod Rochow)
• Heat of Fusion: 11.06kJ/mol
• Incompatibilities:

• Ionization Potential
  • First: 5.94
  • Second: 11.67
  • Third: 22.802
• Valence Electron Potential (-eV): 47.4

Physical Properties of Dysprosium

• Atomic Mass Average: 162.5
• Boiling Point: 2835K 2562°C 4644°F
• Coefficient of lineal thermal expansion/K^-1: 10E^-6
• Conductivity

  Electrical: 0.0108 10⁶/cm
  Thermal: 0.107 W/cmK

• Density: 8.55g/cc @ 300K
• Description:

  A hard, selivery rare earth metal. It is oxidised by oxygen, dissolves in acids and reacts rapidly with cold water.

• Elastic Modulus:
  • Bulk: 40.5/GPa
  • Rigidity: 24.7/GPa
  • Youngs: 61.4/GPa
• Enthalpy of Atomization: 301 kJ/mole @ 25°C
• Enthalpy of Fusion: 11.05 kJ/mole
• Enthalpy of Vaporization: 230 kJ/mole
• Flammablity Class:
• Freezing Point: see melting point
• Hardness Scale
  • Brinell: 500 MN m^-2
  • Vickers: 540 MN m^-2
• Heat of Vaporization: 230kJ/mol
• Melting Point: 1685K 1412°C 2574°F
  
• Molar Volume: 19 cm³/mole
• Physical State (at 20°C & 1atm): Solid
• Specific Heat: 0.17J/gK

Regulatory / Health

• CAS Number
  • 7429-91-6
• OSHA Permissible Exposure Limit (PEL)
  • No limits set by OSHA
• OSHA PEL Vacated 1989
  • No limits set by OSHA
• NIOSH Recommended Exposure Limit (REL)
  • No limits set by NIOSH
• Levels In Humans:
  Note: this data represents naturally occuring levels of elements in the typical human, it DOES NOT represent recommended daily allowances.
  • Blood/mg dm^-3: n/a
  • Bone/p.p.m: n/a
  • Liver/p.p.m: n/a
  • Muscle/p.p.m: n/a
  • Daily Dietary Intake: n/a
  • Total Mass In Avg. 70kg human: n/a
• Discovery Year: 1886
• Name Origin:

  Greek: dysprositos (hard to get at).

• Abundance of Dysprosium:
  • Earth's Crust/p.p.m.: 6
  • Seawater/p.p.m.:
    • Atlantic Suface: 0.0000008
    • Atlantic Deep: 9.6E-07
    • Pacific Surface: N/A
    • Pacific Deep: N/A
  • Atmosphere/p.p.m.: N/A
  • Sun (Relative to H=1E¹²): 11.5
• Sources of Dysprosium:

  Usually found with erbium, holmium and other rare earths in some minerals. Around 100 tons are produced annually. Primary mining areas are USA, Brazil, India, Sri Lanka and Australia.

• Uses of Dysprosium:

  As control-rods for nuclear reactors because it readily absorbs neutrons. Also used in alloys for making magnets.

• Additional Notes:

[Last update: 2/22/2007]

Notes below

Dysprosium Menu

• Dysprosium Page One
  • Overview of Dysprosium
  • Dysprosium's Name in Other Languages
  • Atomic Structure of Dysprosium
  • Chemical Properties of Dysprosium
  • Physical Properties of Dysprosium
  • Regulatory / Health
  • Who/When/Where/How
• Dysprosium Page Two
  • Nuclides / Isotopes
  • Potential Parent Nuclides

Related Resources

• Anatomy of the Atom
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• Molar Mass Calculations and Javascript Calculator
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• Chemical Database
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Citing this page

If you need to cite this page, you can copy this text:

Kenneth Barbalace. Periodic Table of Elements - Dysprosium – Dy. EnvironmentalChemistry.com. 1995 - 2008. Accessed on-line: 5/14/2008
http://EnvironmentalChemistry.com/yogi/periodic/Dy.html
.