Arsenic is a chemical element with symbol As and at... - dofaq.co
arsenic

Arsenic is a chemical element with symbol As and at...

wikipedia - 13 Feb 2017
Arsenic is a chemical element with symbol As and atomic number 33. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Arsenic is a metalloid. It has various allotropes, but only the gray form is important to industry.

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