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Gallium(II) sulfide, GaS, is a chemical compound of gallium and sulfur. The normal form of gallium(II) sulfide as made from the elements has a hexagonal layer structure containing Ga 2 4+ units which have a Ga-Ga distance of 248pm. [1] This layer structure is similar to GaTe, GaSe and InSe. [1]
Gallium is a chemical element; it has the symbol Ga and atomic number 31. Discovered by the French chemist Paul-Émile Lecoq de Boisbaudran in 1875, [13] gallium is in group 13 of the periodic table and is similar to the other metals of the group (aluminium, indium, and thallium).
Gallium sulfide may refer to: Gallium(III) sulfide, Ga 2 S 3; Gallium(II) sulfide, GaS; Thiogallate cations containing gallium and sulfur This page was last edited on ...
Gallium(III) sulfide, Ga 2 S 3, has 3 possible crystal modifications. [7]: 104 It can be made by the reaction of gallium with hydrogen sulfide (H 2 S) at 950 °C. [3]: 162 Alternatively, Ga(OH) 3 can be used at 747 °C: [8] 2 Ga(OH) 3 + 3 H 2 S → Ga 2 S 3 + 6 H 2 O. Reacting a mixture of alkali metal carbonates and Ga 2 O 3 with H
Ga 2 S 3 decomposes at high temperature forming the non-stoichiometric sulfide, Ga 4 S x (4.8 < x < 5.2). [5] Ga 2 S 3 dissolves in aqueous acids and decomposes slowly in moist air forming H 2 S. [2] Ga 2 S 3 dissolves in aqueous solutions of potassium sulfide, K 2 S to form K 8 Ga 4 S 10 containing the (Ga 4 S 10) 8− anion which has an ...
A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...
A compound semiconductor is a semiconductor compound composed of chemical elements of at least two different species. These semiconductors form for example in periodic table groups 13–15 (old groups III–V), for example of elements from the Boron group (old group III, boron, aluminium, gallium, indium) and from group 15 (old group V, nitrogen, phosphorus, arsenic, antimony, bismuth).
Periodic table of the chemical elements showing the most or more commonly named sets of elements (in periodic tables), and a traditional dividing line between metals and nonmetals. The f-block actually fits between groups 2 and 3 ; it is usually shown at the foot of the table to save horizontal space.