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Rare-earth elements in the periodic table The rare-earth elements (REE), also called the rare-earth metals or rare earths or, in context, rare-earth oxides...

uncombined as relatively pure native element minerals. Nearly all other naturally occurring elements occur in the Earth as compounds or mixtures. Air is mostly...

A rare-earth magnet is a strong permanent magnet made from alloys of rare-earth elements. Developed in the 1970s and 1980s, rare-earth magnets are the...

element with the symbol Sc and atomic number 21. It is a silvery-white metallic d-block element. Historically, it has been classified as a rare-earth...

biological role; some samarium salts are slightly toxic. Samarium is a rare earth element with a hardness and density similar to zinc. With a boiling point...

called wolfram) is a chemical element; it has symbol W and atomic number 74. It is a rare metal found naturally on Earth almost exclusively as compounds...

Oxygen is the most abundant element in Earth's crust, and after hydrogen and helium, it is the third-most abundant element in the universe. At standard...

work by creating a "mass effect", the production of dark energy from a reaction with a dark matter substance known as Element Zero or "eezo" to slingshot...

9781572970731, p4 DeBuvitz, William (January 1989). "Administratium. New chemical Element Discovered". The Physics Teacher. Retrieved 18 November 2011. Gilchrist...

the present name, rhenium. Georges Urbain claimed to have found element 72 in rare-earth residues, while Vladimir Vernadsky independently found it in orthite...

given for rare earth glass refers to an award for glass design, not glass composition. The name "didymium" continued to be used in the rare earth metal industry...

the most common element on Earth, forming much of Earth's outer and inner core. It is the fourth most abundant element in the Earth's crust, being mainly...

are of intermediate strength between iron-based permanent magnets and rare-earth magnets. The metal is used chiefly in alloys and corrosion-resistant plating...

rare element in Earth's crust; it has an average crustal abundance by mass of only 0.08 parts per million (ppm) and is the 66th most abundant element...

+2 and the slightly more stable +4. Tin is the 49th-most abundant element on Earth and has, with 10 stable isotopes, the largest number of stable isotopes...

of hydrogen, the lightest element. The planetary boundary layer is the part of the troposphere that is nearest the Earth's surface and is directly affected...

ice (CsOH). Rubidium is the 16th most abundant element in the earth's crust; however, it is quite rare. Some minerals found in North America, South Africa...

second-most abundant halogen (after fluorine) and 20th most abundant element in Earth's crust. These crystal deposits are nevertheless dwarfed by the huge...

the same inherent properties of the mineral except with the additional element of blue color in the stone. They are colored blue by trace impurities of...

water are opposing elements, as are earth and wood. Creatures played on a field that corresponds to their element, such as a fire creature on a fire field...