Arsenic


Arsenic may appear to be a poisonous element. This is because it is used as a
poison for murder both in real life cases and in made up books. But there are a
lot of chemical uses for arsenic such as it being a specimen. Arsenic is also
known arsenic in French, Arsen in German, arsenico in Italian and arsenico in

Spanish. The atomic number of the element arsenic is 33. The atomic weight is

74.92160(2). Itís symbol on the periodic table is As and its electronic
configuration is [Ar].3d10.4s2.4p3. Arsenic occurs in two solid modifications:
yellow, and gray or metallic. Its color is tin- white which tarnishes to dark
gray or black. Its luster is metallic but the tarnish will dull the luster. The
transparency of crystals of arsenic are opaque. Its hardness is 3.4. Its
specific gravities are 1.97 and 5.73, respectively. Arsenic is steel gray, very
brittle, crystalline, semi-metallic (metalloid) solid. It tarnishes in air, and
oxidizes to arsenous oxide when it is heated rapidly. Arsenous oxide has a
garlic odor. Its is associated with the minerals silver, dyscrasite, barite,
cinnabar and nickeline. Arsenic seems to be known as poisonous. When you heat
arsenic and certain minerals that contains arsenic, it sublimes. Arsenicís
discoverer was known since ancient times but we do not know when or where it was
discovered. The word arsenic roots from the Greek word "arsenikon"
meaning "yellow orpiment". Arsenicís physical data includes its
standard state, color, density of solid at ambient temperature/kg m-3, and molar
volume per squared centimeter. Arsenic is solid at 298 K in its standard state.

Its color is metallic gray and has a density of 5727. Its molar volume per
squared centimeter is 12.95. There is two types of temperatures calculated per

K. Its melting point is 1090 per K and its boiling point is 887 per K. Isotopes:

The nominal mass of Arsenic is 75As. Its accurate mass is 74.921594(17). It has

100% natural abundance. Arsenic is used in minor ores of arsenic and as mineral
specimens. Arsenic is used in bronzing, pyrotechnic, hardening and improving the
sphericity of shot, d as a doping agent in solid-state devices such as
transistors. The arsenide is also used as a laser material to convert
electricity directly into covalent light. Arsenic, despite its poisonous
reputation, it may be a necessary ultratrace element for humans. It is a
necessary ultratrace element for red algae, chickens, rats, goats, and pigs.