Arsenic might be very poisonous, but it's used in common things like weed killers and insusceptible. It's an ancient element that was used by the Chinese, Asians, Egyptians, Greeks, and Romans. It was named for the Greek word 'arsenikon' and officially discovered in 1250 by Albertus Magnus. It's currently found in France, Norway, Germany, Japan, England, Italy, and the USA.
Arsenic is a metalloid, which means it has both characteristics of metals and non-metals. Its symbol is "As".