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What are noble metals? Why are they called so?
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According to this definition, gold, silver, and copper arenoble metals. Another definition of a noble metal is one which resists oxidation and corrosion. This excludes copper, but adds in other platinum groupmetals, such as rhodium, palladium, ruthenium, osmium, and iridium.
The noble metals are metals that are resistant to corrosion and oxidation in moist air. The short list of chemically noble metals comprises ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, and gold. More inclusive lists include one or more of mercury, rhenium and copper as noble metals.
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The noble metals are metallic elements like silver,gold,platinum, iridium,palladium.
These are called noble metals because they are non-reactive and occur in free state in nature. They remain unaffected by air, moisture e.t.c
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