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Choose the word which is least like the other words: Copper, Gold, Silver, Iron
Copper
Gold
Silver
Iron
Iron
Identify the chemical classification: Copper, Gold, and Silver are coinage/noble metals, while Iron is a ferrous/base metal.
Identify the chemical classification: Copper, Gold, and Silver are coinage/noble metals, while Iron is a ferrous/base metal.
Analyze the chemical property of the metals
Copper, Gold, and Silver are classified as coinage metals. They are relatively resistant to oxidation and corrosion under normal conditions.
Evaluate the nature of Iron
Iron is a ferrous metal, highly reactive to oxygen and moisture, which leads to the formation of rust (iron oxide) easily, distinguishing it from the non-corrosive nature of the other three.
A: Copper is a coinage metal and is resistant to oxidation. B: Gold is a noble metal and highly resistant to oxidation. C: Silver is a precious metal and shares similar properties with Gold and Copper.
D is correct because Iron is a ferrous metal prone to corrosion, whereas Copper, Gold, and Silver are noble/coinage metals resistant to corrosion.
In Odd One Out questions involving elements, always look for properties like noble vs base metals, conductivity, or state of matter at room temperature.
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