Name:
Arsenic
Symbol:
As
Atomic Number:
33
Atomic Mass:
74.9216
Atomic Volume:
12.98 cc/mol
Discovered By:
Isolated by Albertus Magnus in 1250
Discovery Date:
1250
Origin of Name:
Arsenic - (Latin) arsenicum, (Greek) arsenikon (yellow orpiment (As
2
O
3
) identified with arsenikos (male) in the belief that metals were different sexes) (Arabic) az-zernikh (the orpiment from Persian zerni-zar (gold))
Toxicity:
Elementary arsenic is not toxic in pure form. Compounds are highly toxic.
Summary:
Found to a small extent as the element, mostly as arsenides of metals. Most compounds containing arsenic are poisonous. Gallium arsenide is an important semiconductor material.
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