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Erbium is a chemical element; it has symbol Er and atomic number 68. A silvery-white [7] solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements. It is a lanthanide, a rare-earth element, originally found in the gadolinite mine in Ytterby, Sweden, which is the source of the element's name.
Erbium (III) chloride is a violet compounds that can be formed by first heating erbium (III) oxide and ammonium chloride to produce the ammonium salt of the pentachloride ( [NH 4] 2 ErCl 5) then heating it in a vacuum at 350-400 °C. [9][10][11] It forms crystals of the AlCl3 type, with monoclinic crystals and the point group C 2/m. [12]
Erbium oxide is insoluble in water but soluble in mineral acids. Er 2 O 3 does not readily absorb moisture and carbon dioxide from the atmosphere. It can react with acids to form the corresponding erbium(III) salts. For example, with hydrochloric acid, the oxide follows the following idealized reaction leading to erbium chloride:
neodymium. The rare-earth elements (REE), also called the rare-earth metals or rare earths, and sometimes the lanthanides or lanthanoids (although scandium and yttrium, which do not belong to this series, are usually included as rare earths), [1] are a set of 17 nearly indistinguishable lustrous silvery-white soft heavy metals.
1. Jens Peder Bergensten (born 18 May 1979), known professionally as Jeb, is a Swedish video game programmer and designer. He is best known as the lead designer of Minecraft, [1][2][3] and is the chief creative officer of Mojang Studios. In 2013, he, along with Minecraft creator Markus Persson, was named as one of Time 's 100 most influential ...
Pages in category "Erbium compounds" The following 19 pages are in this category, out of 19 total. This list may not reflect recent changes. ...
Naturally occurring erbium (68 Er) is composed of six stable isotopes, with 166 Er being the most abundant (33.503% natural abundance).Thirty-nine radioisotopes have been characterized with between 74 and 112 neutrons, or 142 to 180 nucleons, with the most stable being 169 Er with a half-life of 9.4 days, 172 Er with a half-life of 49.3 hours, 160 Er with a half-life of 28.58 hours, 165 Er ...
Steve is a player character from the 2011 sandbox video game Minecraft. Created by Swedish video game developer Markus "Notch" Persson and introduced in the 2009 Java-based version, Steve is the first of nine default player character skins available for players of contemporary versions of Minecraft. Steve lacks an official backstory as he is ...