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Arsenic: As Atomic Mass 74.9216 Atomic # 33 Protons 33 Electrons 33 Neutrons 42 Melting point 817 C - Boiling point 614 C Normal phase Solid Cost 320$ per 100g Classification Metalloid Family Metalloid Comes from the greek word "arsenikon"meaning "yellow orpiment" Discovered by the Greek and Egyptian Civilizations but obtained by Albertus Magnus in 1250 A.D.

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