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Tetrasulfur tetranitride print that page

are given for materials in their standard state (at 25 °C, 100 kPa) Infobox references Tetrasulfur tetranitride is an inorganic compound with the formula S 4 N 4 . This gold-poppy coloured solid is the most important binary sulfur nitride , which are compounds that contain only

wikipedia.org | 2011/5/26 3:54:12

Sulfur print that page

Sulfur-sample

In nature , sulfur can be found as the pure element and as sulfide and sulfate minerals. Elemental sulfur crystals are commonly sought after by mineral collectors for their brightly colored polyhedron shapes. Being abundant in native form, sulfur was known in ancient times, mentioned for

Nitride print that page

In chemistry , a nitride is a compound of nitrogen where nitrogen has a formal oxidation state of −3. Nitrides are a large class of compounds with a wide range of properties and applications. [ 1 ] The nitride ion, N 3– , is never encountered in solution because it is so basic that

wikipedia.org | 2011/4/26 5:03:58

Polythiazyl print that page

Several resonance structures can be written: [ 3 ] [ edit ] Synthesis Polythiazyl is synthesized from tetrasulfur tetranitride (S 4 N 4 ) via disulfur dinitride (S 2 N 2 ), in the following way: [ 1 ] S 4 N 4 + 8 Ag → 4 Ag 2 S + 2 N 2 S 4 N 4 (w/ Ag 2 S catalyst) → 2 S

wikipedia.org | 2010/9/25 2:06:43

Allotropes of sulfur print that page

allotropes and forms 2 Gaseous allotropes 2.1 S 2 , disulfur 2.2 S 3 , trisulfur 2.3 S 4 , tetrasulfur 3 Solid cyclo-sulfur allotropes 3.1 cyclo-S 5 , pentasulfur 3.2 S 6 , cyclo-hexasulfur 3.3 cyclo-S 6 .cyclo-S 10 adduct 3.4 S 7 ,cyclo-heptasulfur 3.5 Cyclo-S 8

wikipedia.org | 2011/8/30 1:45:40

Selenium print that page

SeBlackRed

Selenium is found in sulfide ores such as pyrite , where it partially replaces the sulfur. Minerals that are selenide or selenate compounds are also known, but are rare. The chief commercial uses for selenium today are in glassmaking and in chemicals and pigments . Uses in electronics , once