Arsenic - Wikipedia
Arsenic is a notoriously toxic heavy metal. It occurs naturally in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. It has various allotropes, but only the grey form, which has a metallic appearance, is important to industry.
Arsenic | Definition, Symbol, Uses, & Facts | Britannica
4 天之前 · Arsenic, a chemical element in the nitrogen group (Group 15 [Va] of the periodic table), existing in both gray and yellow crystalline forms. Its chemical symbol is As, and it was first clearly identified as a free substance in 1649 by German pharmacist Johann Schroeder.
Arsenic - Element information, properties and uses | Periodic Table
Element Arsenic (As), Group 15, Atomic Number 33, p-block, Mass 74.922. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
Arsenic | As (Element) - PubChem
Elemental arsenic occurs in two solid modifications: yellow, and gray or metallic, with specific gravities of 1.97, and 5.73, respectively. It is believed that Albertus Magnus obtained the element in 1250 A.D.
Arsenic | As | CID 5359596 - PubChem
Arsenic is a naturally occurring element widely distributed in the earth's crust. In the environment, arsenic is combined with oxygen, chlorine, and sulfur to form inorganic arsenic compounds. Arsenic in animals and plants combines with carbon and hydrogen to …
Arsenic Element Facts - chemicool.com
Arsenic is immediately dangerous to life or health at 5 mg m -3. Our bodies do not readily absorb the element itself, hence pure arsenic is much less dangerous than As (III) compounds such as AsH 3 and As 2 O 3 which are absorbed easily and are carcinogenic with high toxicity. Characteristics: Arsenic occurs in three distinct solid forms.
Arsenic, Chemical Element - water, uses, elements, metal, gas, …
Arsenic rarely occurs as a pure element. It is usually found as a compound. The most common ores of arsenic are arsenopyrite (FeAsS), orpiment (As 2 S 3 ), and realgar (As 4 S 4 ).
Arsenic | Encyclopedia.com
2018年5月21日 · arsenic (ar-sĕn-ik) n. a poisonous greyish metallic element producing the symptoms of nausea, vomiting, diarrhoea, cramps, convulsions, and coma when ingested in large doses. Arsenic was formerly used in medicine, the most important arsenical drugs being arsphenamine (Salvarsan) and neoarsphenamine , used in the treatment of syphilis and ...
Arsenic - The Chemical Elements
2020年4月9日 · Arsenic is a chemical element with an atomic number 33 in the periodic table of elements. There’s 1.5–2 ppm of this crystalline metalloid in the Earth’s crust. Being a member of the phosphorus family of periodic table elements, this chemical element has five valence electrons that help arsenic make numerous compounds with other substances.
Arsenic Facts, Symbol, Discovery, Properties, Common Uses
2018年9月5日 · Since our bodies are incapable of absorbing the element itself, pure arsenic is much less hazardous than its compounds [3]. It has three distinct allotropes that are in solid form, gray arsenic (the most common one), black arsenic and yellow arsenic [3]. The pure metalloid is priced at $320 for every 100 gram [3].