Arsenic

= //__Arsenic__//  =

//__Facts__//
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 * Arsenic is a chemical element.
 * Symbol is **As.**
 * Density: 5.727 g
 * Atomic mass: 74.9216 g
 * Atomic number: 33
 * Melting point: 817.0 C
 * Boiling point: 613. 0 C
 * Isotopes: 60 As, 61 As, 62 As, 63 As, 64 As, 65 As, 66 As, 66m1 As, 66m2 As, 67 As, 68 As, 68m As, 69 As, 70 As, 70m As, 71 As, 72 As, 73 As, 74 As, 75 As, 75m As, 76 As, 76m As, 77 As, 77m As, 78 As, 79 As, 79m As, 80 As, 81 As, 82m As, 83 As, 84m As, 85 As, 86 As, 87 As, 88 As, 89 As, 90 As, 91 As, 92 As.
 * Arsenic is a metalloid and an Alkila Earth Metal.
 * Used for strengthening alloys of copper and lead (e.g car batteries).
 * Arsenic is used in production of pesticides, insecticides, and herbicides.
 * Arsenic poisoning in drinking water is a problem in parts of the world[[image:cdsgrade8/arsenic.jpg width="453" height="292" align="right" caption="http://www.galleries.com/Arsenic"]].

__Characteristics__
= = =**__History__**= Arsenic has been used since ancient times. It has been used for multiple things such as pesticides, insecticides, herbicides, cigarettes, and also has ben eaten by women in the victorian era to improve their complextion from working in the fields. Arsenic is also used in the helping to a cure to a certain type of cancer. It used be used as a wood preservative to keep the wood from rotting faster and to keep the insects from eating it.
 * Three most common allotropes: metallic grey, yellow, black aresenic.
 * Double-layered structure with six-membered rings.
 * Has a weak bonding between layers.

__Uses__
- Toxic to insects, bacteria, and fungi. - Is used as a wood preservative. - Using arsenic as a wood preserver was the most extensive industrial use of arsenic. - Is still used in animal food and in particular the US as a method of disease prevention.
 * ===__Agricultural Uses__===

- Arsenic compounds were used as medicines in the 18th, 19th, and 20th centuries such as arshpenamine and trioxide. - Arsenic trioxide was used in a variety ways, but most commonly in the treatment of cancer. - The FDA approved this compoud as a treatment for patients with acute promyelocytic leukemia.
 * __**Medical Uses**__

- Up to 2% of arsenic is used in lead alloys for lead shots and bullets. - Us also used for taxonomic sample preservation. - Until now arsenic was used in optical glass, but now companies have removed it along with lead. - Also used in bronzing and pyrotechnics.
 * __**Other Uses**__

**__Product Uses__**
Arsenic was and still is used in many different products used in everyday life. Arsenic compounds can be found in various pesticides and insecticides such as rat poison, wood perservitives, and cigarettes.