Arsenic: Difference between revisions
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Revision as of 16:33, 13 December 2008
Arsenic is a chemical element, having the chemical symbol As.
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Its atomic number (the number of protons) is 33. It has a Standard Atomic Weight of 74.92160(2), and is typically found as a solid in its elemental form.
Arsenic is considered to be a member of the "Metalloid" class of elements, has a boiling point of 613 °C (sublimation point at atmospheric pressure of 1 atm) , and a melting point of 817 °C (at atmospheric pressure of 28 atm) .