Airsenic is a chemical element wi symbol As an atomic nummer 33.
Airsenic occurs in mony minerals, uisually in conjunction wi sulfur an metals, an an aa as a pure elemental crystal. It wis first documentit bi Albertus Magnus in 1250. Airsenic is a metalloid. It can exist in sindry allotropes, altho anly the gray furm haes important uise in industry.
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