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- S. C. Carapella
- 2002
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 of… (More)
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 slimes… (More)