Which of the following metals will have the highest rate of corrosion?

Gold

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Copper

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Lead

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Magnesium

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Solution

The correct option is D Magnesium
The rate of corrosion depends on the reactivity of the metals. Higher the reactivity, higher the rate of corrosion. Among the given metals, gold and copper belong to the category of low reactivity, while lead belongs to the medium and magnesium belongs to the high reactivity category. So, magnesium will have the highest rate of corrosion.

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