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  1. Arsenic - Element information, properties and uses | Periodic Table

  2. Arsenic - Wikipedia

  3. Arsenic | As (Element) - PubChem

  4. Arsenic | Definition, Symbol, Uses, & Facts | Britannica

  5. Arsenic | As | CID 5359596 - PubChem

  6. Arsenic (As) [33] — Chemical Element — Periodic Table

  7. arsenic - NIST Chemistry WebBook

  8. WebElements Periodic Table » Arsenic » the essentials

  9. Arsenic (As) - Periodic Table

  10. Arsenic (As) - Chemical Elements.com