See also:

• Science: Chemistry: Elements: Metalloids  (0)
• Science: Environment: Environmental Health: Toxic Substances: Arsenic  (6)
• Science: Environment: Water Resources: Groundwater: Arsenic Contamination  (12)

• ChemGlobe: Arsenic - Electronic, thermal, and steric data along with an isotope table.
• ChemicalElements.com: Arsenic - Basic information, atomic structure, and isotopes.
• EnvironmentalChemistry.com: Arsenic - Atomic structure, chemical and physical properties, and table of nuclides.
• It's Elemental: Arsenic - Basic physical and historical information.
• LANL: Arsenic - History, properties, and uses.
• Lenntech: Arsenic - Physical data, chemical properties, health and environmental effects.
• Periodic Table of the Elements: Arsenic - Thermal properties, ionisation energies, and reduction potentials.
• Radiochemistry of Arsenic - Full text of the monograph by J. G. Cuninghame (Atomic Energy Research Establishment, Harwell, Didcot, Berkshire, England). [PDF]
• USGS - Minerals Information: Arsenic - Overview and a number of publications in PDF format.
• Visual Elements: Arsenic - Source, biological role, physical information, and key isotopes.
• WebElements: Arsenic - Extensive information on history, uses, occurrence, compounds, and properties of the element.
• Wikipedia: Arsenic - Details the properties of the element, including its history, applications, and characteristics.