Definition of Arsenic

Arsenic
atomic symbol, As, arsenic is the 33rd element in the periodic table ( atomic number 33) with an  atomic weight of 74.9. Arsenic is a group V element making it a donor in silicon, i.e., makes silicon N-type. Arsenic has the same atomic diameter as silicon and so introduces very little strain into a silicon crystal lattice. Arsenic has a relatively low diffusivity and is widely used to create shallow doped junctions such as source/drains. Arsenic is toxic and carcinogenic.

Arsenic
(n.)
One of the elements, a solid substance resembling a metal in its physical properties, but in its chemical relations ranking with the nonmetals. It is of a steel-gray color and brilliant luster, though usually dull from tarnish. It is very brittle, and sublimes at 356¡ Fahrenheit. It is sometimes found native, but usually combined with silver, cobalt, nickel, iron, antimony, or sulphur. Orpiment and realgar are two of its sulphur compounds, the first of which is the true arsenicum of the ancients. The element and its compounds are active poisons. Specific gravity from 5.7 to 5.9. Atomic weight 75. Symbol As.
  
(n.)
Arsenious oxide or arsenious anhydride; -- called also arsenious acid, white arsenic, and ratsbane.
  
(a.)
Pertaining to, or derived from, arsenic; -- said of those compounds of arsenic in which this element has its highest equivalence; as, arsenic acid.
  

arsenic

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Noun
1. 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
(synonym) As, atomic number 33
(hypernym) chemical element, element
(substance-holonym) herbicide, weedkiller, weed killer
2. a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide and weed killer
(synonym) arsenic trioxide, arsenous anhydride, arsenous oxide
(hypernym) trioxide

ARSENIC
Arsenic, (n.)

A kind of cosmetic greatly affected by the ladies, whom it greatly affects in turn.

"Eat arsenic? Yes, all you get,"
Consenting, he did speak up;
"'Tis better you should eat it, pet,
Than put it in my teacup."

Joel Huck
  

arsenic
     arcsine

arsenic

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arsenic
\ar"se*nic\ (?r"s&esl;*n&ibreve;k; 277), n. [l. arsenicum, gr. 'arseniko`n, 'arreniko`n, yellow orpiment, perh. fr. 'arseniko`s or better attic 'arreniko`s masculine, 'a`rrhn male, on account of its strength, or fr. per. zernīkh: cf. f. arsenic.]
1. (chem.) one of the elements, a solid substance resembling a metal in its physical properties, but in its chemical relations ranking with the nonmetals. it is of a steel-gray color and brilliant luster, though usually dull from tarnish. it is very brittle, and sublimes at 356° fahrenheit. it is sometimes found native, but usually combined with silver, cobalt, nickel, iron, antimony, or sulphur. orpiment and realgar are two of its sulphur compounds, the first of which is the true arsenicum of the ancients. the element and its compounds are active poisons. specific gravity from 5.7 to 5.9. atomic weight 75. symbol as.
2. (com.) arsenious oxide or arsenious anhydride; -- called also arsenious acid, white arsenic, and ratsbane.
arsenic
\ar*sen"ic\, a. (chem.) pertaining to, or derived from, arsenic; -- said of those compounds of arsenic in which this element has its highest equivalence; as, arsenic acid.
arsenic
n
1. 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 [syn: as, atomic number 33 ]


2. a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide and weed killer [syn: arsenic trioxide, arsenous anhydride, arsenous oxide ]


arsenic
symbol: as atomic number: 33 atomic weight: 74.922 metalloid element of group 15. there are three allotropes, yellow, black, and grey. reacts with halogens, concentrated oxidizing acids and hot alkalis. albertus magnus is believed to have been the first to isolate the element in 1250.
-- elements

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  similar words(4) 

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 arsenic trioxide 
 arsenic group 
 white arsenic 
 ruby of arsenic 

arsenic
arsanaic

arsenic
A poisonous chemical used to kill weeds and pests. Also used in cancer therapy. 

arsenic
noun
chemical element which forms poisonous compounds, such as arsenic trioxide, and which was once used in some medicines
(NOTE: chemical symbol is As)

Arsenic

General Information:
 Chemical Formula:
As
 Composition:
(Molecular Weight = 74.92 gm)
Arsenic 100.0 % As
 Empirical Formula:
As
 Environment:
In ore veins in crystalline rocks.
 Locality:
Saxony, Great Britain.
 Name Origin:
From the Greek, Arsenikon, a name originally applied to the mineral orpiment.
Physical Properties:
 Cleavage:
[0001] Perfect
 Color:
lead gray, gray, or white.
 Density:
5.7
 Diaphaniety:
Opaque
 Habits:
Nodular - Tuberose forms having irregular protuberances over the surface., Reniform - "Kidney like" in shape (e.g.. hematite)., Lamellar - Thin laminae producing a lamellar structure.
 Hardness:
3.5 - Copper Penny
 Luminescence:
None.
 Luster:Diagnostic tests: Arsenides, sulpharsenites, etc. (As^2-), give off fumes when roasted on charcoal, usually easily recognized by their peculiar garlic odor. In the open tube test, they give a white, volatile, crystalline sublimate of As₂O₃. In the closed tube test with sulfur, they yield a sublimate of dark brown-red when hot and red or reddish yellow when cold; or a black to gray mirror sublimate of metallic arsenic. Arsenates (AsO₄) can be detected by the garlic odor yielded when a mixture of the powdered mineral with charcoal dust and Na₂CO₃ is heated with a reducing flame on charcoal.
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