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Arsenic and Arsenic Alloys
Arsenic, although often referred to as a metal, is classified chemically as a nonmetal or metalloid and belongs to Group 15 (VA) of the Periodic Table (as does antimony). The principal valences ofExpand
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Tellurium and Tellurium Compounds
Tellurium is the most metallic of the abundant chalogens. In many of its chemical properties, it still resembles oxygen, sulfur, and selenium. More than 90% of tellurium is produced from anode slimesExpand
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