Neodymium Elemental Symbol

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Néodyme Neodym Neodimio Neodímio Neodimio Neodym

Elemental Neodymium PictureNeodymium is a Block F, Group 3, Period 6 element. Neodymium Bohr ModelThe number of electrons in each of Neodymium's shells is 2, 8, 18, 22, 8, 2 and its electron configuration is [Xe] 4f4 6s2. The neodymium atom has a radius of and it's Van der Waals radius is In its elemental form, CAS 7440-00-8, neodymium has a silvery-white appearance. Neodymium is the most abundant of the rare earths after cerium and lanthanum. Neodymium is found in monazite and bastnäsite ores. Neodymium was first discovered by Carl Aer von Welsbach in 1885. The name originates from the Greek words ‘neos didymos’, meaning new twin.

Primary applications include lasers, glass coloring and tinting, dielectrics and, most importantly, as the fundamental basis for neodymium-iron-boron permanent magnets. Neodymium has a strong absorption band centered at 580 nm, which is very close to the human eye's maximum level of sensitivity making it useful in protective lenses for welding goggles. It is also used in CRT displays to enhance contrast between reds and greens and highly valued in glass manufacturing for its attractive purple coloring. Neodymium is included in many formulations of barium titanate, used as dielectric coatings and in multi-layer capacitors essential to electronic equipment. Neodymium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity). High Purity (99.999%) Neodymium Oxide (Nd2O3) PowderElemental or metallic forms include pellets, rod, wire and granules for evaporation source material purposes. High Purity (99.999%) Neodymium (Nd) Sputtering TargetNeodymium nanoparticles and nanopowders provide ultra-high surface area which nanotechnology research and recent experiments demonstrate function to create new and unique properties and benefits. Oxides are available in powder and dense pellet form for such uses as optical coating and thin film applications. Oxides tend to be insoluble. Fluorides are another insoluble form for uses in which oxygen is undesirable such as metallurgy, chemical and physical vapor deposition and in some optical coatings. Neodymium is also available in soluble forms including chlorides, nitrates and acetates. These compounds can be manufactured as solutions at specified stoichiometries.

Safety data for Neodymium and its compounds can vary widely depending on the form. For potential hazard information, toxicity, and road, sea and air transportation limitations, such as DOT Hazard Class, DOT Number, EU Number, NFPA Health rating and RTECS Class, please see the specific material or compound referenced in the Products tab below.

  • Properties
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  • Isotopes
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Neodymium Properties

Symbol: Nd Melting Point: 1016 oC, 1860.8 oF, 1289.15 K
Atomic Number: 60 Boiling Point: 3074 oC, 5565.2 oF, 3347.15 K
Atomic Weight: 144.2 Density: 7.01 g·cm−3
Element Category: Lanthanides Liquid Density @ Melting Point: 6.89 g·cm−3
Group, Period, Block: n/a, 6, f Specific Heat: 0.049 Cal/g/K @ 25°C
    Heat of Vaporization 69 K-Cal/gm atom at 3068°C
CHEMICAL STRUCTURE Heat of Fusion 1.70 Cal/gm mole
Electrons: 60 Thermal Conductivity: 0.165 W/cm/K @ 298.2 K
Protons: 60 Thermal Expansion: 6.89 g·cm−3
Neutrons: 84 Electrical Resistivity: 64.0 microhm-cm @ 25°C
Electron Configuration: [Xe] 4f46s2 Electronegativity: 1.2 Paulings
Atomic Radius: 181 pm Tensile Strength: N/A
Covalent Radius: 201±6 pm Molar Heat Capacity: 27.45 J·mol−1·K−1
Van der Waals radius: 229 pm Young's Modulus: (α form) 41.4 GPa
Oxidation States: 3, 2, 1 (mildly basic oxide) Shear Modulus: (α form) 16.3 GPa
Phase: Solid Bulk Modulus: (α form) 31.8 GPa
Crystal Structure: hexagonal Poisson Ratio: (α form) 0.281
Magnetic Ordering: paramagnetic Mohs Hardness: N/AQ
1st Ionization Energy: 533.09 kJ mol-1 Vickers Hardness: 343 MPa
2nd Ionization Energy: 1035.30 kJ mol-1 Brinell Hardness: 265 MPa
3rd Ionization Energy: 2132.34 kJ mol-1 Speed of Sound: (20 °C) 2330 m·s−1
CAS Number: 7440-00-8 Abundance in typical human body, by weight: N/A
ChemSpider ID: 22376 Abundance in typical human body, by atom: N/A
PubChem CID: 23934 Abundance in universe, by weight: 10 ppb
MDL Number: MFCD00011130 Abundance in universe, by atom: 0.09 ppb
EC Number: 231-109-3 Discovered By: Carl Auer von Welsbach
Beilstein Number: N/A Discovery Date: 1885
SMILES Identifier: [Nd]  
InChI Identifier: InChI=1S/Nd Other Names: Néodyme, Neodym, Neodimio

Health, Safety & Transportation Information for Neodymium

Material Safety Data Sheet MSDS
Signal Word Danger
Hazard Statements H260-H315-H319-H335
Hazard Codes F,Xi
Risk Codes 11-14/15-36/37/3
Safety Precautions 16-26-33-36/37/39-43
RTECS Number QO8575000
Transport Information UN 3208 4.3/PG
WGK Germany 3
Globally Harmonized System of
Classification and Labelling (GHS)
Exclamation Mark-Acute Toxicity Flame-Flammables  

Neodymium Products

Metal Forms  •  Compounds  •  Alloys  •  Oxide Forms  •  Organometallic Compounds
Sputtering Targets  •  Nanomaterials  •  Semiconductor Materials •  Isotopes


Didymium Oxide
Neodymium Acetate
Neodymium Acetate Solution
Neodymium Aluminide
Neodymium Boride
Neodymium(II) Bromide NdBr2
Neodymium( III) Bromide NdBr3
Neodymium(III) Bromide Hydrate
Neodymium Bromide, Ultra Dry NdBr3
Neodymium Calcium Aluminate
Neodymium Carbide
Neodymium Carbonate
Neodymium(III) Carbonate Hydrate
Neodymium Chloride
Neodymium Chloride, Anhydrous
Neodymium(III) Chloride Hexahydrate
Neodymium Chloride, Ultra Dry
Neodymium Chloride Solution
Neodymium Fluoride
Neodymium Fluoride Granules
Neodymium Fluoride Pieces
Neodymium Gallium Oxide
Neodymium Hydride NdH2
Neodymium Hydride NdH3
Neodymium Hydroxide
Neodymium(III) Hydroxide Hydrate
Neodymium Iodide NdI2
Neodymium(III) Iodide NdI3
Neodymium Isopropoxide
Neodymium(III) Nitrate, Anhydrous
Neodymium(III) Nitrate Hexahydrate
Neodymium Nitrate Hydrate
Neodymium Nitrate Solution
Neodymium Nitride NdN
Neodymium Nitride NdN3
Neodymium Silicide
Neodymium Sulfate Hydrate
Neodymium(III) Sulfate Octahydrate
Neodymium Sulfate Solution
Neodymium Perchlorate Solution
Neodymium Perchlorate Solution
Neodymium(III) Phosphate Hydrate
Neodymium(III) Titanate

Organometallic Compounds

Neodymium 2-Ethylhexanoate
Neodymium Acetylacetonate
Neodymium Oxalate
Neodymium Oxalate, Anhydrous
Neodymium Oxalate Hydrate
Neodymium Trifluoromethanesulfonate
Neodymium(III) Hexafluoro-2,4 - pentanedionate
Neodymium(III) Tris(2,2,6,6-tetramethyl-3,5-heptanedionate)


Neodymium-145 Oxide Isotope
Neodymium-150 Oxide Isotope

Recent Research & Development for Neodymium

  • Antifungal effects of a 1444-nm neodymium:Yttrium-aluminum-garnet laser on onychomycosis: a pilot study. Choi MJ, Zheng Z, Goo B, Cho SB. J Dermatolog Treat. 2014 Aug.
  • Kinetics and its accompanying thermodynamics studies on simultaneous complexation of heterobimetallic neodymium (III) with zinc (II) and L-tryptophan in aquated DMF using 4f-4f absorption spectra. Huidrom B, Singh NR. Spectrochim Acta A Mol Biomol Spectrosc. 2014 Jan.
  • Dynamic photopatterning of cells in situ by Q-switched neodymium-doped yttrium ortho-vanadate laser. Deka G, Okano K, Kao FJ. J Biomed Opt. 2014 Jan.
  • NIR fluorescence studies of neodymium ions doped sodium fluoroborate glasses for 1.06µm laser applications. Madhukar Reddy C, Vijaya N, Deva Prasad Raju B. Spectrochim Acta A Mol Biomol Spectrosc. 2013 Nov.
  • Treatment of onychomycosis using a submillisecond 1064-nm neodymium:yttrium-aluminum-garnet laser. Carney C, Cantrell W, Warner J, Elewski B. J Am Acad Dermatol. 2013 Oct
  • A case of mottled hypopigmentation after low-fluence 1,064-nm Q-switched neodymium-doped yttrium aluminum garnet laser therapy. Ryu HJ, Kim J. J Cosmet Laser Ther. 2013.
  • Comparative effectiveness of nonpurpuragenic 595-nm pulsed dye laser and microsecond 1064-nm neodymium:yttrium-aluminum-garnet laser for treatment of diffuse facial erythema: A double-blind randomized controlled trial. Alam M, Voravutinon N, Warycha M, Whiting D, Nodzenski M, Yoo S, West DP, Veledar E, Poon E. J Am Acad Dermatol. 2013 Sep.
  • Neodymium-yttrium aluminum garnet laser versus pulsed dye laser in erythemato-telangiectatic rosacea: comparison of clinical efficacy and effect on cutaneous substance (P) expression. Salem SA, Abdel Fattah NS, Tantawy SM, El-Badawy NM, Abd El-Aziz YA. J Cosmet Dermatol. 2013 Sep.
  • Histological evaluation of dermal tissue remodeling with the 1444-nm neodymium:yttrium-aluminum-garnet laser in in vivo model. Kim JH, Min KH, Heo CY, Baek RM, Park HJ, Youn SW, Kim EH. J Dermatol. 2013 Sep.
  • Liquid-liquid extraction of neodymium(iii) by dialkylphosphate ionic liquids from acidic medium: the importance of the ionic liquid cation. Rout A, Kotlarska J, Dehaen W, Binnemans K. Phys Chem Chem Phys. 2013 Aug 15.
  • Congenital plaque-like glomangioma treated successfully with dual wavelength pulsed-dye and neodymium:yttrium-aluminum-garnet laser. Grillo E, Boixeda P, Paoli J, Vano-Galván S, Carrillo R, Jaén P. Photodermatol Photoimmunol Photomed. 2013 Aug.
  • Clinical efficacy of the dual-pulsed Q-switched neodymium:yttrium-aluminum-garnet laser: Comparison with conservative mode. Kim BW, Lee MH, Chang SE, Yun WJ, Won CH, Lee MW, Choi JH, Moon KC. J Cosmet Laser Ther. 2013 Jul 16.
  • Near-IR luminescent neodymium complexes: spectroscopic probes for hydroamination catalysis. Bennett SD, Pope SJ, Ward BD. Chem Commun (Camb). 2013 Jul 11
  • Effect of subdermal 1,444-nm pulsed neodymium-doped yttrium aluminum garnet laser on the nasolabial folds and cheek laxity. Lee SH, Roh MR, Jung JY, Jee H, Nam KA, Chung KY. Dermatol Surg. 2013 Jul.
  • Single-treatment resolution of vascular blebs within port wine stains using a novel 1,064-nm neodymium-doped yttrium aluminum garnet laser. Brauer JA, Geronemus RG. Dermatol Surg. 2013 Jul.
  • Successful treatment of facial telangiectasias using a micropulse 1,064-nm neodymium-doped yttrium aluminum garnet laser. Rose AE, Goldberg DJ. Dermatol Surg. 2013 Jul.
  • Neodymium:YAG laser anterior capsulectomy: surgical option in the management of negative dysphotopsia. Folden DV. J Cataract Refract Surg. 2013 Jul.
  • Self-assembling neodymium/sodium heterobimetallic asymmetric catalyst confined in a carbon nanotube network. Ogawa T, Kumagai N, Shibasaki M. Angew Chem Int Ed Engl. 2013.
  • Rare case of optic fracture in a glass intraocular lens after neodymium-doped yttrium aluminium garnet capsulotomy. Hsieh MW, Chien KH, Liu CC, Lu DW, Tai MC. Clin Experiment Ophthalmol. 2013 May-Jun.
  • Analogy to a Chinese knot in an ion-pair copper(II)-neodymium(III) complex based on a hexadentate Schiff base condensation product of 5-bromosalicylaldehyde and glycylglycine. Xu LQ, Lu LP, Zhu ML. Acta Crystallogr C. 2013.

Neodymium Isotopes

Neodymium has five stable isotopes: 142Nd, 143Nd, 145Nd, 146Nd and 148Nd.

Nuclide Symbol Isotopic Mass Half-Life Nuclear Spin
142Nd 141.9077233 Stable 0+
143Nd 142.9098143 Observationally Stable 7/2-
145Nd 144.9125736 Observationally Stable 7/2-
146Nd 145.9131169 Observationally Stable 0+
148Nd 147.916893 Observationally Stable 0+