arsenic

تعريف arsenic في الإنجليزية الإنجليزية القاموس.: Of, or containing arsenic with a valence of 5; Arsenic trioxide; A nonmetallic chemical element (symbol As) with an atomic number of 33; {n} a metal, opake, heavy, friable, brilliant and poisonous; Symbol As; A chemical element typically used as an N-type dopant in various doping, deposition, and ion implant processes; It is very brittle, and sublimes at 356° Fahrenheit; It exists uncombined in two stable (and several unstable) allotropes, one gray and one yellow, but is more often found in nature as the sulfide or oxide. The elemental form is used to form alloys of metals (especially lead), and certain semiconductors are made from crystals of gallium arsenide (GaAs). Arsenious oxide (arsenic trioxide or white arsenic, As2O3) is used in pesticides, as a pigment, and as a preservative of hides and wood; this is the poisonous "arsenic" (see arsenic poisoning) in detective stories. Arsenic pentoxide (As2O5) is also used in insecticides, herbicides, metal adhesives, and pigments; {i} poisonous chemical element; Atomic weight 75; A chemical element, symbol As, atomic number 33, atomic weight 74 92 A brittle toxic steel-gray hexagonal mineral, the native form of the element; Sources include natural deposits, use as a pesticidal agent, and from phosphate fertilizers containing arsenic Measured in mg/L or ppm The MCL for arsenic is 0 05 mg/L or ppm; It is of a steel- gray color and brilliant luster, though usually dull from tarnish; Arsenious oxide or arsenious anhydride; called also arsenious acid, white arsenic, and ratsbane; One of the elements, a solid substance resembling a metal in its physical properties, but in its chemical relations ranking with the nonmetals; Orpiment and realgar are two of its sulphur compounds, the first of which is the true arsenicum of the ancients; a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide and weed killer; A metalloid occurring naturally in the earth's crust and fossil fuels It is used in the production of glass, enamels, ceramics, oil, cloth, linoleum, electrical semiconductors, pigments, fireworks, pesticides, fungicides, veterinary pharmaceuticals, and wood preservatives It is a known human carcinogen, and bioaccumulates to toxic levels; Pertaining to, or derived from, arsenic; said of those compounds of arsenic in which this element has its highest equivalence; as, arsenic acid; A solid poisonous element that is generally grey in color and crystalline and brittle in nature; {s} pertaining to arsenic, containing arsenic (poisonous chemical element); Specific gravity from 5; Arsenic is a very strong poison which can kill people. a very poisonous chemical substance that is sometimes used to kill rats, insects, and weeds. It is a chemical element : symbol As (arsenicum, from arsenikon yellow mineral from which arsenic is obtained, from zarnig). Nonmetallic to semimetallic chemical element, chemical symbol As, atomic number; The element and its compounds are active poisons; 7 to 5; Arsenic is a naturally occurring element which, in its pure form, is a silver-grey crystalline solid In the environment it is usually combined with other elements in a variety of organic and inorganic forms; A brittle semi-metallic element used in some forms of bronze Melting point: 815° C; A Group V element that is an n-type dopant in silicon; a very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar; It is sometimes found native, but usually combined with silver, cobalt, nickel, iron, antimony, or sulphur; an inorganic crystalline element that is brittle, metallic steel-gray and poisonous; occurs naturally in the environment
arsenic acid: A poisonous, white crystalline compound, H3AsO4, formed from arsenic pentoxide and water; it has the same structure as phosphoric acid, and is used in the manufacture of arsenates
arsenic trichloride: A colourless oily liquid, AsCl3, used in the synthesis of organic arsenic compounds
arsenic trihydride: The compound arsine
arsenic trioxide: An industrially important oxide of arsenic that occurs as the mineral claudetite; formula As2O3 (though in liquid, gaseous and some solid forms it has molecules of the form As4O6)
arsenic trisulfide: The bright yellow sulfide of arsenic, As2S3, that occurs as the mineral orpiment, and has been used as a pigment
arsenic trisulphide: Alternative spelling of arsenic trisulfide
arsenic acid: an acid formed from arsenic pentoxide
arsenic acid: crystalline compound (Chemistry)
arsenic poisoning: Harmful effects of arsenic compounds (in pesticides, chemotherapy drugs, paints, etc.), most often from insecticide exposure. Susceptibility varies. Arsenic is believed to combine with certain enzymes, interfering with cellular metabolism. Symptoms of acute arsenic poisoning include nausea and abdominal pain followed by circulatory collapse. Acute exposure to the gas arsine causes destruction of red blood cells and kidney damage; chronic exposure causes weakness, skin disorders, anemia, and nervous-system disorders. Arsenic in urine and hair or nails is the key to diagnosis. Treatment involves washing out the stomach and promptly administering the antidote dimercaprol
butter of arsenic: The compound arsenic trichloride

arsenic

الواصلة

ar·se·nic

التركية النطق

ärsınîk

النطق

/ˈärsənək/ /ˈɑːrsənɪk/

علم أصول الكلمات

() Middle English, from Old French, from Latin arsenicum, from Ancient Greek ἀρσενικόν (arsenikón, “orpiment”), from Middle Persian *zarnīk (“gold-colored”), from Old Persian *zarniya-, from zar- (“yellow”). Compare Old Armenian զառիկ (zaṙik).

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