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Question

What metals don't oxidize?


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Solution

Corrosion:

  • Corrosion is a natural process that causes the transformation of pure metals into undesirable substances when they react with substances like water or air.
  • Generally, reactive metals corrode easily because they react with atmospheric air and moisture very readily.

Noble metals:

  • Precious and noble metals such as Platinum (Pt), and Gold (Au) resist oxidation and do not corrode.
  • Platinum and Gold are highly non-reactive metals.
  • Alloys such as stainless steel and brass are also corrosion-resistant.
  • The most corrosion-resistant metal known is Iridium (Ir) as it is not attacked at high temperatures by any acid, aqua regia, or silicates.

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