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Arsenic |
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33 germanium ← arsenic → selenium P ↑ As ↓ Sb periodic table General Name, Symbol, Number arsenic, As, 33 Chemical series metalloids Group, Period, Block 15, 4, p Appearance metallic gray Atomic mass 74.92160(2) g/mol Electron configuration [Ar] 3d10 4s2 4p3 Electrons per shell 2, 8, 18, 5 Physical properties Phase solid Density (near r.t.) 5.727 g·cm−3 Liquid density at m.p. 5.22 g·cm−3 Melting point 1090 K (817 °C, 1503& ...
Wikipedia - [full article]
Arsenic Organizations
- Centers for Disease Control and Prevention http://www.cdc.gov/
- Medline Plus http://medlineplus.gov/
- National Center for Infectious Diseases
- U.S. Geological Survey
- Environmental Protection Agency
- Environmental Protection Agency, Office of Pesticide Programs
- National Institute of Environmental Health Sciences http://www.niehs.nih.gov/
- Environmental Protection Agency, Office of Prevention, Pesticides and Toxic Substances
- Environmental Protection Agency, Office of Water
- Agency for Toxic Substances and Disease Registry
Resources
- Agency for Toxic Substances and Disease Registry
- Arsenic (Agency for Toxic Substances and Disease Registry)
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