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  1. Nickel - Wikipedia

  2. Nickel | Definition, Properties, Symbol, Uses, & Facts | Britannica

  3. Nickel (Ni) - Periodic Table

  4. Nickel | Ni (Element) - PubChem

  5. Nickel - Element information, properties and uses | Periodic Table

  6. Nickel Facts, Symbol, Discovery, Properties, Uses - Chemistry …

  7. Nickel (Ni) - The Chemical Elements

  8. Nickel Element | History, Uses, Facts, Physical & Chemical …

  9. Nickel (Ni) - Element Information, Facts, Properties, Uses

  10. Nickel Facts – Atomic Number 28 or Ni - Science Notes and …