ytterbium definition of ytterbium in the Free Online Encyclopedia.

ytterbium (ĭtûr`bēəm) [for Ytterby, a town in Sweden], metallic chemical element; symbol Yb; at. no. 70; at. wt. 173.04; m.p. 819°C;; b.p. about 1,194°C;; sp. gr. about 7.0; valence +2 or +3. Ytterbium is a soft, malleable, ductile, lustrous silver-white metal. Although it is one of the rare-earth metals rare-earth metals, in chemistry, group of metals including those of the lanthanide series and actinide series, usually yttrium, sometimes scandium and thorium, and rarely zirconium.
..... Click the link for more information. of the lanthanide series lanthanide series, a series of metallic elements, included in the rare-earth metals, in Group 3 of the periodic table. Members of the series are often called lanthanides, although lanthanum (atomic number 57) is not always considered a member of the series.
..... Click the link for more information. in Group 3 of the periodic table periodic table, chart of the elements arranged according to the periodic law discovered by Dmitri I. Mendeleev and revised by Henry G. J. Moseley. In the periodic table the elements are arranged in columns and rows according to increasing atomic number (see the table
..... Click the link for more information. , in some of its chemical and physical properties it more closely resembles calcium, strontium, and barium. It exhibits allotropy allotropy [Gr.,=other form]. A chemical element is said to exhibit allotropy when it occurs in two or more forms in the same physical state; the forms are called allotropes.
..... Click the link for more information. ; at room temperature a face-centered cubic crystalline form is stable. The metal tarnishes slowly in air and reacts slowly with water but rapidly dissolves in mineral acids. It forms numerous compounds, some of which are yellow or green. The oxide (ytterbia, Yb₂O₃) is colorless. It is widely distributed in a number of minerals, e.g., gadolinite, and is recovered from monazite but has no commercial uses. Its discovery is credited to J. C. G. de Marignac, who in 1878 separated a substance he called ytterbia. In 1907, Georges Urbain showed that this substance contained lutetium in addition to ytterbium. At about this same time C. A. von Welsbach independently discovered ytterbium and called it aldebaranium.

ytterbium

a soft malleable silvery element of the lanthanide series of metals that occurs in monazite and is used to improve the mechanical properties of steel. Symbol: Yb; atomic no.: 70; atomic wt.: 173.04; valency: 2 or 3; relative density: 6.903 (alpha), 6.966 (beta); melting pt.: 819?C; boiling pt.: 1196?C

ytterbium [i′tər·bē·əm]

(chemistry)

A rare-earth metal of the yttrium subgroup, symbol Yb, atomic number 70, atomic weight 173.04; lustrous, malleable, soluble in dilute acids and liquid ammonia, reacts slowly with water; melts at 824°C, boils at 1427°C; used in chemical research, lasers, garnet doping, and x-ray tubes.

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No references found	They’re generally clustered in a separate grouping at the bottom of the table, are known collectively as the lanthanoids, and these are their names, in order of atomic number (57-70): lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, and ytterbium. Why all the fuss over rare earths? by Doug Hornig / Stockhouse 0 at% erbium were co-doped with ytterbium in amounts also ranging from 1. Optical properties of PMMA doped with erbium(III) and ytterbium(III) ... by Prajzler, Vaclav; Huttel, Ivan; Lyutakov, Oleksiy; Oswald, Jiri; Machovic, Vladimir; Jerabek, Vitezs / Polymer Engineering and Science Byline: ANI Washington, August 12 (ANI): Scientists at the National Institute of Standards and Technology (NIST) have said that an experimental atomic clock based on ytterbium atoms is about four times more accurate than it was several years ago, giving it a precision comparable to that of the NIST-F1 cesium fountain clock, the civilian time standard of the US. Atomic clock based on ytterbium atoms 4 times more accurate than ... by Asian News International	Ypsilanti family Ypsilantis Ypsilothuriidae Yr yrast state Yrjo Elias Sirola Yrjö Elias Sirola Yrjo-Koskinen Yrjó-Koskinen YS Ysaye, Eugene Ysaye, Eugène Ysaÿe, Eugène Yser Yser River Yseult YSM Yssel Ystad Ysyakh Ysyk Köl Ysyk, Lake YT YTalk ytterbia ytterbium ytterbium oxide yttria Yttrium yttrium acetate yttrium chloride yttrium iron garnet yttrium oxide yttrium sulfate yttrium-aluminum-garnet laser yttrium-iron-garnet device yttrocrasite yttrotantalite yu Yu Hyong-Won Yu Shan Yü Shan Yu Ta-Fu Yü Ta-Fu Yu-Shiang Whole Fish Yuaikai Yuan Yüan Yuan Chen Yüan Chen Yuan Chiang	YTPT YTR Ytre Namdal Vg Skole Ytre Nordfjord Turlag YTRN YTRRC YTS YTS YTS YTS YTSA YTSC YTSD YTSI YTSO YTSS YTT YTTA YTTC YTTCCH YTTCP YTTDSFATCCSH YTTE ytterbia ytterbia ytterbic ytterbic ytterbic ytterbic ytterbite ytterbium ytterbium oxide ytterbium oxide Ytterbium-Doped Fiber Laser YTTI YTTM YTTR yttria yttria Yttria Partially Stabilized Zirconia Yttria Tetragonal Zirconia Polycrystals Yttria-Stabilized Zirconia yttric yttric yttric yttric Yttriferous Yttrious yttrium yttrium yttrium yttrium yttrium yttrium yttrium 90 Y ibritumomab tiuxetan yttrium acetate Yttrium Aluminum Garnet Yttrium Aluminum Garnet Laser Yttrium Aluminum Laser Yttrium Aluminum Perovskite Yttrium barium copper oxide

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They’re generally clustered in a separate grouping at the bottom of the table, are known collectively as the lanthanoids, and these are their names, in order of atomic number (57-70): lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, and ytterbium.

Why all the fuss over rare earths? by Doug Hornig / Stockhouse

0 at% erbium were co-doped with ytterbium in amounts also ranging from 1.

Optical properties of PMMA doped with erbium(III) and ytterbium(III) ... by Prajzler, Vaclav; Huttel, Ivan; Lyutakov, Oleksiy; Oswald, Jiri; Machovic, Vladimir; Jerabek, Vitezs / Polymer Engineering and Science

Byline: ANI Washington, August 12 (ANI): Scientists at the National Institute of Standards and Technology (NIST) have said that an experimental atomic clock based on ytterbium atoms is about four times more accurate than it was several years ago, giving it a precision comparable to that of the NIST-F1 cesium fountain clock, the civilian time standard of the US.

Atomic clock based on ytterbium atoms 4 times more accurate than ... by Asian News International

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