Rare-earth element definition and meaning | Collins ...
Rare-earth element definition: any element of the lanthanide series | Meaning, pronunciation, translations and examples
Rare-earth element definition: any element of the lanthanide series | Meaning, pronunciation, translations and examples
Rare earth element (REE) deposits are one such unconventional resource. REEs have unique catalytic, metallurgical, nuclear, electrical, magnetic and luminescent properties, and play a critical role in the application of many modern technologies, including magnetic resonance imaging (MRI) machines, satellites, batteries, LED screens and solar ...
Rare earth element definition is - any of a series of metallic elements of which the oxides are classed as rare earths and which include the elements of the lanthanide series and sometimes yttrium and scandium —called also rare earth metal.
They're much more abundant in the Earth's crust than many other valuable elements. Even the rarest rare earth, thulium, with atomic number 69, is 125 times more common than gold. And the least ...
The term 'rare earths' was first used in the late eighteenth and early nineteenth centuries, to refer to minerals containing REE and some other metals, known deposits of which were rare – only subsequently did the name 'rare earth elements' come to be associated solely with the specific set of elements it …
The rare earth elements are often described as being a 'light-group rare earth element' (LREE) or 'heavy-group rare earth element' (HREE). The definition of a LREE and HREE is based on the electron configuration of each rare-earth element. …
rare-earth element - rare-earth element - Properties of the metals: As noted above, the rare-earth elements—especially the lanthanides—are quite similar. They occur together in nature, and their complete separations are difficult to achieve. However, there are some striking differences, especially in the physical properties of the pure metallic elements.
Ytterbium definition is - a soft metallic element of the rare-earth group that occurs especially with other rare earth elements in minerals and that has few commercial uses.
Dans les sciences du vivant, l'espèce (du latin species, « type » ou « apparence ») est le taxon de base de la systématique.Il existe 22 concepts d'espèce (espèce biologique, morphologique, écologique, comportementale…) dans la littérature scientifique [1].La définition la plus communément admise est celle du concept biologique énoncé par Ernst Mayr en 1942 [2], [3], [4 ...
The Wicheeda project has indicated mineral resources of 4,890,000 tonnes averaging 3.02% LREO (Light Rare Earth Elements) and inferred mineral resources of 12,100,000 tonnes averaging 2.90% LREO 1.
rare earth definition: one of a group of metal chemical elements that are difficult to find in large quantities, and are…. Learn more.
Element definition is - one of the basic substances that are made of atoms of only one kind and that cannot be separated by ordinary chemical means into simpler substances. See more meanings of element. How to use element in a sentence. Synonym Discussion of element.
From the U.S. Geological Survey news release "Going Critical": "Although currently no U.S. Government-wide definition exists, broadly speaking, if a vital sector of the economy requires a mineral in order to function, that mineral would likely be deemed "critical". Rare earth elements are hardly the only critical minerals. They're not even the only minerals critical to the
The rare earths, a collection of 17 elements including the lanthanides—lanthanum to lutetium—along with scandium and yttrium, have become indispensable components in many essential ...
Neodymium definition, a rare-earth, metallic, trivalent element occurring with cerium and other rare-earth metals, and having rose-colored to violet-colored salts. Symbol: Nd; atomic weight: 144.24; atomic number: 60; specific gravity: 6.9 at 20°C. See more.
The rare earth elements (REEs) or rare earth metals (REMs) are a group of metals found within the same ores and possessing similar chemical properties. Scientists and engineers disagree on exactly which element should be included in a list of the rare earths, but they generally include the fifteen lanthanide elements, plus scandium and yttrium.
RARE EARTH ELEMENT 'RARE EARTH ELEMENT' is a 16 letter phrase starting with R and ending with T Synonyms, crossword answers and other related words for RARE EARTH ELEMENT We hope that the following list of synonyms for the word rare earth element will help you to finish your crossword today.
rare-earth element (râr′ûrth′) n. Any of a group of 17 naturally occurring metallic elements that have similar properties, consisting of scandium, yttrium, and the 15 elements with atomic numbers 57 through 71 (the lanthanides). The rare-earth elements are widely used in electronics and other high-tech products. [rare earth.] American Heritage ...
Transition elements (also known as transition metals) are elements that have partially filled d orbitals. IUPAC defines transition elements as an element having a d subshell that is partially filled with electrons, or an element that has the ability to form stable cations with an incompletely filled d orbital.
Rare-Earth Elements. By Bradley S. Van Gosen, Philip L. Verplanck, Robert R. Seal II, Keith R. Long, and Joseph Gambogi Chapter O of. Critical Mineral Resources of the United States—Economic and
Rare Element Resources Ltd. is a publicly traded mineral resource company focused on exploration and development of rare-earth element deposits that carry a favorable distribution of critical rare earths. The Company is advancing development of the owned Bear Lodge Project, located in northeast Wyoming.. Conversion from Imperial to Metric Measurement Units | Industry Definition Relating ...
Literary usage of Rare-earth element. Below you will find example usage of this term as found in modern and/or classical literature: 1. An International Spent Nuclear Fuel Storage Facility: Exploring a Russian by Glenn E. Schweitzer, A. Chelsea Sharber (2005) "The Nd and Eu in rocks and minerals compose from 10—25 to 0.5—2 percent of the total rare earth element amount.
Most rare earth elements are mined through open pit mining, which involves opening the surface of the earth using heavy equipment and machinery. Creating this disruption on the surface of the earth disrupts thriving ecosystems. Furthermore, mines are the point source of release for three major contaminants: are radionuclides, rare earth ...
Element A material factor; a basic component. The term is used to mean one of several parts that unite to form a whole, as in elements of a criminal action or civil action. In the tort of Assault and Battery, an essential element of the offense would be unwanted physical contact. An element of the crime of rape is lack of consent on the part of the ...
rare definition: 1. not common or frequent; very unusual: 2. (of meat) not cooked for very long and still red: 3…. Learn more.
Rare Element Resources Ltd. is a publicly traded mineral resource company focused on exploration and development of rare-earth element deposits that carry a favorable distribution of critical rare earths. The Company is advancing development of the owned Bear Lodge Project, located in northeast Wyoming.. Conversion from Imperial to Metric Measurement Units | Industry Definition Relating ...
An element is a substance whose atoms all have the same number of protons: another way of saying this is that all of a particular element's atoms have the same atomic number.. Elements are chemically the simplest substances and hence cannot be broken down using chemical reactions. Elements can only be changed into other elements using nuclear methods.
A precise definition of rare earth elements (REEs) and in-depth discussion of how common REEs are, worldwide REE production, and current REE production. Rare Earths Statistics and Information (Website), U.S. Geological Survey
Interactive periodic table with up-to-date element property data collected from authoritative sources. Look up chemical element names, symbols, atomic masses and other properties, visualize trends, or even test your elements knowledge by playing a periodic table game!
rare earth element. One of a series of metallic elements that follow lanthanum (at. no. 57) in the periodic table of elements and that have oxides with similar properties. The series comprises the 14-element lanthanide series (at. nos. 58-71 and includes praseodymium, promethium, and ytterbium. See also: element.