Arsenic is a metalloid. Common in the composition of the rocks. Coal and clay In ancient times arsenic is a known Greek and Roman guys with Orpiment is also known as arsenic (Arsenic) Chinese people use arsenic as a component of many types of herbal medicine is about 2-3 thousand years, when over and sometimes it is a toxin that is used in the murder and suicide. Arsenic (Arsenic) as carcinogens by atomic weight is 74.9216/5 is 3 0, Len, and Sy-3, found arsenic has 2 organic arsenic (Organic) and inorganic arsenic (Inorganic) rat poisoning, organic fare less than inorganic arsenic.
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