Neodymium is one of the more reactive members of the lanthanide group. It oxidises rapidly in air to form an oxide which rapidly spalls away to reveal fresh metal. The metal reacts slowly with cold water and rapidly with hot water. The metal is found in monazite (CePO4, a principal source of the rare earths and thorium) and orthite. The applications for pure neodymium are limited, but it is used in alloys used to produce permanent magnets and flints. It is also used as an additive to glasses which are used in solid state lasers and light amplifiers.


1885 by Baron Auer von Weisbach.

38 ppm in the earth’s crust.

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Atomic number 60 Clip
Atomic / Molecular Weight 144.24 gmol-1Clip
Density 7000 kgm-3Clip
Crystal Structure hcp / bcc at 1135K Clip
Lattice constant 366 fmClip
Melting Point 1297 KClip
Boiling Point 3373 KClip
Specific heat capacity 188 Jkg-1K-1Clip
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See also: Didymium, Periodic Table.

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Subjects: Chemistry