Question

Why are cheap metals coated with gold or
silver.​

Answer 1

Answer:

metals can mostly combine with o2 to form oxides but when coated with gold and silver  are non reactive noble gases hence they wont react and will cause no damage to the product

Explanation:

Answer 2

Answer:

Cheap metals coated with gold or silver to make ornaments. To give a shiny appearance to that metal and also claimed to increase stent biocompatibility and haemocompatibility.

Explanation:

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