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What is arsenic?
Chemistry of arsenic
33 protons 42 neutrons actinide elements Adenosine diphosphate Adenosine triphosphate alchemists alchemy amounts of arsenic arsenic acid arsenic atoms form arsenic compounds arsenic is combined arsenic is found arsenic is heated arsenic minerals arsenic oxides arsenic pentoxide arsenic poisoning arsenic reacts arsenic sulfide arsenic-containing mineral arsenopyrite atomic mass number atomic number byproduct cell Chemical reactions chemist chemistry circling the nucleus circuit containing arsenic crystals diode doping agent dust electric current example fireworks gallium arsenide Geber gold gray arsenic herbicide invented isotopes lanthanide elements laser MARSH TEST materials melt metalloid metals and nonmetals microchips murderers nonmetals number of atoms number of electrons number of protons orpiment outer electrons outer shell periodic table Phosphate ion phosphorus pigments positive charge powder protons and neutrons reactions that take reacts with oxygen realgar Salvarsan semiconductor shot silicon solid arsenic substance sulfur tiny amounts tiny particle white arsenic yellow arsenic yellow form