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neodymium    
n. 钕

钕

neodymium
n 1: a yellow trivalent metallic element of the rare earth
group; occurs in monazite and bastnasite in association
with cerium and lanthanum and praseodymium [synonym:
{neodymium}, {Nd}, {atomic number 60}]

Neodymium \Ne`o*dym"i*um\, n. [NL. Dee {Neo-}, and {Didymium}.]
(Chem.)
The chemical element of atomic number 60, one of the rare
earth elements. Symbol Nd. Atomic weight 144.27.

Note: It is a rare metallic element occurring in combination
with cerium, lanthanum, and other rare metals, and
forming amethyst-colored salts. It was originally
thought to be part of a supposed new element didymium,
obtained from cerite in 1843. Later this was resolved
into two elements, neodymium and praesodymium by von
Welsbach in 1885. It is chiefly trivalent. It is a
faintly yellow metal.
[1913 Webster PJC]

neodymium
Symbol: Nd
Atomic number: 60
Atomic weight: 144.24
Soft bright silvery metallic element, belongs to the lanthanoids. Seven
natural
isotopes, Nd-144 being the only radioactive one with a half-life of
10^10
to 10^15 years. Six artificial radioisotopes have been produced. The
metal is used in glass works to color glass a shade of violet-purple and
make it dichroic. One of the more reactive rare-earth metals, quickly
reacts
with air. Used in some rare-earth alloys. Neodymium is used to color
the glass used in welders' glasses. Neodymium is also used in very
powerful, permanent magnets (Nd2Fe14B). Discovered by Carl F. Auer von
Welsbach in Austria in 1885 by separating didymium into its elemental
components {praseodymium} and neodymium. The name comes from the Greek
words
"neos didymos" which means "new twin". Neodymium should be considered
highly toxic, however evidence would seem to show that it acts as little
more than a skin and eye irritant. The dust however, presents a fire and
explosion hazard.


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  • Neodymium - Wikipedia
    Neodymium is a chemical element; it has symbol Nd and atomic number 60 It is the fourth member of the lanthanide series and is considered to be one of the rare-earth metals It is a hard, slightly malleable, silvery metal that quickly tarnishes in air and moisture
  • Neodymium | Rare Earth Element, Uses Properties | Britannica
    neodymium (Nd), chemical element, a rare-earth metal of the lanthanide series of the periodic table Neodymium is a ductile and malleable silvery white metal It oxidizes readily in air to form an oxide, Nd 2 O 3, which easily spalls, exposing the metal to further oxidation
  • Neodymium Facts – Symbol Nd or Atomic Number 60
    Neodymium is a silvery-white rare earth metal with atomic number 60 and element symbol Nd It is one of the most widely used lanthanides due to its powerful magnetic properties It forms extremely strong permanent magnets, critical in technologies ranging from electric motors to smartphones
  • Neodymium - Element information, properties and uses | Periodic Table
    Element Neodymium (Nd), Group 19, Atomic Number 60, f-block, Mass 144 242 Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images
  • Neodymium Facts, Symbol, Discovery, Properties, Uses
    Neodymium (pronounced as nee-eh-dim-ee-em) belongs to the family of lanthanides metals and denoted by the chemical symbol Nd [1, 2] It comprises of five naturally-occurring stable isotopes whose mass numbers range from 142 to 148 of which Nd-144 is a radioisotope [4]
  • Endangered Element: Neodymium - American Chemical Society
    Neodymium is one of the more reactive lanthanides; with important uses in advanced electronic technologies, transportation, energy, and defense
  • Neodymium (Nd) - Rare-Earth Metal Properties, Uses, and Value
    Learn about Neodymium, atomic number 60 Discover its properties, uses in Permanent magnets and more, plus current market value
  • Neodymium: Element Properties and Uses - samaterials. com
    Neodymium is a rare-earth metal, meaning it is relatively scarce in the Earth's crust but highly prized for its unique properties Its uses have grown significantly, especially in the fields of electronics, energy, and medical technology
  • Neodymium Element Facts Chemistry - chemicool. com
    Neodymium is used with iron and boron to create powerful permanent magnets, also called NIB magnets NIB magnets are used in computers, cell phones, medical equipment, toys, motors, wind turbines and audio systems
  • Rare Earth Elements - Purdue University
    Neodymium is used in the production of permanent magnets with boron and iron, these magnets have a wide range of uses in computers and mobile phones Neodymium is not found in the earth's crust as a free element but in the minerals monazite and bastnaesite





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