Element Neodymium

Neodymium ElementAn element of the rare earth family of metals. It has the atomic symbol Nd, atomic number 60, and atomic weight 144.24, and is used in industrial applications.
Neodymium belongs to the lanthanide series and is a rare-earth element.
It is a hard, slightly malleable silvery metal, that quickly tarnishes in air and moisture.
When oxidized, neodymium reacts quickly to produce pink, purple/blue and yellow compounds in the +2, +3 and +4 oxidation state

Names and Identifiers

Chemical Formula:Nd
Molecular Weight:144.242 g/mol
EC Number :231-109-3
MDL Number:MFCD00011130
Color:silvery-white/ silvery white, yellowish tinge
Other Names:Néodyme, Neodym, Neodimio
PubChem CID:23934
IUPAC Name:Neodymium
Canonical SMILES:[Nd]
ICSC Number:n/a

Physical & Chemical Properties

Density:7.01 g/cm³
Boiling Point:3347 K ​(3074 °C, ​5565 °F)
Melting Point:1297 K ​(1024 °C, ​1875 °F)
Molecular Formula:Nd
Flash Point:n/a
Exact Mass:141.907700
Symbol:Globally Harmonized System of Classification
Signal Word:Warning
Hazard Statements:H315-H319-H335
Precautionary Statements:P261-P305 + P351 + P338
Hazard Codes:Xi:Irritant;
Risk Phrases:R11
Safety Phrases:S16-S26-S33-S36/37/39-S43
RIDADR:UN 3208 4.3/PG 1
WGK Germany:3
Packaging Group:III
Hazard Class:8

Neodymium isotopes are used in a variety of scientific applications. Nd-142 has been used for the production of short-lived Tm and Yb isotopes.
Nd-146 has been suggested for the production of Pm-147 which can be used as a source for radioisotopic power generation.
Several Nd isotopes have been used for the production of other Pm isotopes. Finally, Nd-150 has been used to study double beta decay.

Naturally occurring isotopes

IsotopeMass/DaNatural abundance (atom %)Nuclear spin (I)Magnetic moment (μ/μN)
142Nd141.907719 (4)27.2 (5)0
143Nd142.909810 (4)12.2 (2)7/2-1.065
144Nd143.910083 (4)23.8 (3)0
145Nd144.912570 (4)8.3 (1)7/2-0.656
146Nd145.913113 (4)17.2 (3)0
148Nd147.916889 (4)5.7 (1)0
150Nd149.920887 (4)5.6 (2)0

Radiosotope data

IsotopeMass/DaHalf-lifeMode of decayNuclear spinNuclear magnetic moment
138Nd137.91195.1 hEC to 138Pr0
139Nd138.911925.5 hEC to 139Pr11/2
140Nd139.909313.37 dEC to 140Pr0
141Nd140.9096052.49 hEC to 141Pr3/21.01
147Nd146.91609610.98 dβ to 147Pm5/20.58
149Nd148.9201451.73 hβ to 149Pm5/20.35

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