Noble metals, such as Platinum, Gold (Au), and Silver (Ag), are resistant to oxidation and corrosion, which is why they are considered precious metals. Titanium (Ti), Iron (Fe), and Zinc (Zn) are reactive metals that readily react with oxygen to form stable oxides. Titanium forms a passive oxide layer that protects it from further corrosion, but the reaction with oxygen does occur. Iron readily forms rust (iron oxides/hydroxides). Zinc forms a protective layer of zinc oxide/carbonate.
Which one of the following metals does not react with oxygen directly?
Asked in UPSC CAPF 2023 · Topic: Metals, Minerals, Ores: Properties, Uses (Chemical properties of metals (reaction with oxygen, water, acids, bases, other metal salts))
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