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  1. Periodic Table of Elements - PubChem

  2. PubChem

  3. Hydrogen | H (Element) - PubChem

  4. Fluorine | F (Element) - PubChem

  5. Arsenic | As (Element) - PubChem

  6. Copper | Cu (Element) - PubChem

  7. Oxygen | O (Element) - PubChem

  8. Carbon | C (Element) - PubChem

  9. Atomic Mass | Periodic Table of Elements - PubChem

  10. Boron | B (Element) - PubChem