Europium selenide may refer to:
Europium is a chemical element with the symbol Eu and atomic number 63. Europium is a silvery-white metal of the lanthanide series that reacts readily with air to form a dark oxide coating. It is the most chemically reactive, least dense, and softest of the lanthanide elements. It is soft enough to be cut with a knife. Europium was isolated in 1901 and named after the continent of Europe. Europium usually assumes the oxidation state +3, like other members of the lanthanide series, but compounds having oxidation state +2 are also common. All europium compounds with oxidation state +2 are slightly reducing. Europium has no significant biological role and is relatively non-toxic compared to other heavy metals. Most applications of europium exploit the phosphorescence of europium compounds. Europium is one of the rarest of the rare-earth elements on Earth.
Organoselenium chemistry is the science exploring the properties and reactivity of organoselenium compounds, chemical compounds containing carbon-to-selenium chemical bonds. Selenium belongs with oxygen and sulfur to the group 16 elements or chalcogens, and similarities in chemistry are to be expected. Organoselenium compounds are found at trace levels in ambient waters, soils and sediments.
COSE or CoSe may refer to:
Europium chloride may refer to:
Gallium selenide may refer to:
Europium oxide is a compound from the two elements europium and oxygen.
Tribromide is the anion with the chemical formula Br3−, or salts containing it:
Difluorides are chemical compounds with two fluorine atoms per molecule.
Calcium selenide (CaSe) is a chemical compound consisting of the elements calcium and selenium in equal stoichiometric ratio.
Europium halide is a compound of the rare earth metal europium and a halogen. The following compounds are known.
EUO may refer to:
Europium(III) fluoride is an inorganic compound with a chemical formula EuF3.
Europium phosphide is an inorganic compound of europium and phosphorus with the chemical formula EuP. Other phosphides are also known.
Europium(III) acetate is an inorganic salt of europium and acetic acid with the chemical formula of Eu(CH3COO)3. In this compound, europium exhibits the +3 oxidation state. It can exist in the anhydrous form, sesquihydrate and tetrahydrate. Its hydrate molecule is a dimer.
Europium(III) oxalate (Eu2(C2O4)3) is a chemical compound of europium and oxalic acid. There are different hydrates including the decahydrate, hexahydrate and tetrahydrate. Europium(II) oxalate is also known.
Europium iodide may refer to:
Europium fluoride may refer to:
Europium bromide may refer to:
Europium monoselenide is a binary inorganic compound of europium and selenium with the chemical formula EuSe. The compound forms black crystals.
Europium(III) selenide is an inorganic compound with the chemical formula Eu2Se3. It is one of the selenides of europium. It can be obtained by the reaction of selenium and europium at high temperature. It co-melts with germanium diselenide to form Eu2GeSe5 and Eu2Ge2Se7. It reacts with uranium and uranium diselenide at high temperature to obtain EuU2Se5.