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Periodic Table of Elements

Element Neodymium – Nd

Comprehensive data on the chemical element Neodymium is provided on this page; including scores of properties, element names in many languages, most known nuclides of Neodymium. 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.

Neodymium Menu

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

Overview of Neodymium

Neodymium's Name in Other Languages

• Latin: Neodymium
• Czech: Neodym
• Croatian: Neodimij
• French: Néodyme
• German: Neodym - r
• Italian: Neodimio
• Norwegian: Neodym
• Portuguese: Neodímio
• Russian:
• Spanish: Neodímio
• Swedish: Neodym

Atomic Structure of Neodymium

• Atomic Radius: 2.64Å
• Atomic Volume: 20.6cm³/mol
• Covalent Radius: 1.64Å
• Cross Section (Thermal Neutron Capture) _a/barns: 49
• Crystal Structure: Hexagonal

  

• Electron Configuration:

  1s² 2s²p⁶ 3s²p⁶d¹⁰ 4s²p⁶d¹⁰f⁴ 5s²p⁶ 6s²

• Electrons per Energy Level: 2,8,18,22,8,2

  Shell Model
  

• Ionic Radius: 0.995Å
• Filling Orbital: 4f⁴
• Number of Electrons (with no charge): 60
• Number of Neutrons (most common/stable nuclide): 84
• Number of Protons: 60
• Oxidation States: 3
• Valence Electrons: 4f⁴ 6s²

  Electron Dot Model
  

Chemical Properties of Neodymium

• Electrochemical Equivalent: 1.7939g/amp-hr
• Electron Work Function: 3.2eV
• Electronegativity: 1.14 (Pauling); 1.07 (Allrod Rochow)
• Heat of Fusion: 7.14kJ/mol
• Incompatibilities:

• Ionization Potential
  • First: 5.53
  • Second: 10.727
  • Third: 22.076
• Valence Electron Potential (-eV): 43.4

Physical Properties of Neodymium

• Atomic Mass Average: 144.24
• Boiling Point: 3341K 3068°C 5554°F
• Coefficient of lineal thermal expansion/K^-1: 6.7E^-6
• Conductivity

  Electrical: 0.0157 10⁶/cm
  Thermal: 0.165 W/cmK

• Density: 7.01g/cc @ 300K
• Description:

  A Silvery rare earth metal that tarnishes in air and reacts slowly with cold water, but reacts rapidly in hot water.

• Elastic Modulus:
  • Bulk: 31.8/GPa
  • Rigidity: 16.3/GPa
  • Youngs: 41.4/GPa
• Enthalpy of Atomization: 322 kJ/mole @ 25°C
• Enthalpy of Fusion: 7.14 kJ/mole
• Enthalpy of Vaporization: 273 kJ/mole
• Flammablity Class:
• Freezing Point: see melting point
• Hardness Scale
  • Brinell: 265 MN m^-2
  • Vickers: 343 MN m^-2
• Heat of Vaporization: 273kJ/mol
• Melting Point: 1289K 1016°C 1861°F
  
• Molar Volume: 20.6 cm³/mole
• Physical State (at 20°C & 1atm): Solid
• Specific Heat: 0.19J/gK
• Vapor Pressure = 0.00603Pa@2617°C

Regulatory / Health

• CAS Number
  • 7440-00-8
• 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: 1885
• Name Origin:

  Greek: neos (new) didymos (twin).

• Abundance of Neodymium:
  • Earth's Crust/p.p.m.: 38
  • Seawater/p.p.m.:
    • Atlantic Suface: 0.0000018
    • Atlantic Deep: 0.0000032
    • Pacific Surface: 0.0000018
    • Pacific Deep: 0.0000048
  • Atmosphere/p.p.m.: N/A
  • Sun (Relative to H=1E¹²): 17
• Sources of Neodymium:

  Chief ores of Neodymium are monazite and bastnasite. Annual world wide production is around 7,300 tons. Primary mining areas are USA, Brazil, India, Sri Lanka and Australia.

• Uses of Neodymium:

  Used in ceramics to color glazes, in alloys for permanent magnets, for special lens with praseodymium. Also to produce bright purple glass and special glass that filters infrared radiation.

• Additional Notes:

[Last update: 2/22/2007]

Neodymium Menu

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

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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 - Neodymium – Nd. EnvironmentalChemistry.com. 1995 - 2009. Accessed on-line: 11/20/2009
http://EnvironmentalChemistry.com/yogi/periodic/Nd.html
.