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  1. Platinum group - Wikipedia

  2. Platinum group | Chemical Properties, Uses & Occurrence

  3. What Are Platinum Group Metals or PGMs? - Science Notes …

  4. What Are Platinum Group Metals (PGMs)? - ThoughtCo

  5. Platinum group - Alloys, Properties, Uses | Britannica

  6. List of Platinum Group Metals or PGMs - ThoughtCo

  7. What Are the Platinum Group Metals and Why Do They Matter?

  8. Platinum-Group Metals Statistics and Information

  9. Platinum group - Wikiwand

  10. Platinum Group Elements - SpringerLink