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Neodymium

Metalsolid
Symbol: Nd
Atomic number: 60
Atomic mass: 144.24
Group: Lanthanide
CAS-number: 7440-00-8

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Physical data
Isotopes
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Physical data

Electronic dataThermal dataSteric data
Shells: 2, 8, 18, 22, 8, 2
Orbitals: [Xe] 4f4 6s2
Electronegativity: --, 1.1
1. Ionization potential: 5.5250 eV
2. Ionization potential: 10.727 eV
3. Ionization potential: 22.076 eV
Oxidation states: 3
Electrical conductivity: 0.0157 10^6
Melting point: 1021 °C
Boiling point: 3074 °C
Specific heat: 0.19 J/gK
Heat of fusion: 7.140 kJ/mol
Heat of vaporization: 273.0 kJ/mol
Thermal conductivity: 0.165 W/cmK
Atomic radius: 2.64 Å
Ionic radius: -- Å
Covalent radius: 1.64 Å
Atomic volume: 20.6 cm³/mol
Density (293 K): 7.0 g/cm³
Crystal structure: hexagonal
hexagonal

Isotopes

NuclideAbundance [%]MassSpinHalflifeDecay modeDecay tree
142Nd 27.11 141.908 0 -- --
143Nd 12.17 142.91 7/2 -- --
144Nd 23.85 143.91 0 2.1E15y α View
145Nd 8.3 144.913 7/2 -- --
146Nd 17.22 145.913 0 -- --
147Nd 0 147 5/2 10.98d β- View
148Nd 5.73 147.917 0 -- --
149Nd 0 149 5/2 1.72h β- View
150Nd 5.62 149.921 0 -- --

Other info

Name origin:Greek: neos and didymos (new twin).
Description:Silvery-white, rare-earth metal that oxidizes easily in air.
Discovered by:C.F. Aver von Welsbach
Year:1925
Place:Austria
Sources:Made from electrolysis of its halide salts, which are made from monazite sand.
Use(s):Used in making artificial ruby for lasers. Also in ceramics and for a special lens with praseodymium. Also to produce bright purple glass and special glass that filters infrared radiation. Makes up 18% of Mischmetal, which is used in making steel.