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How many of these metals can displace H 2 easily from acids. Fe, Mg, Al, Cu, Ag, Au, Zn

Correct answer

4

Step-by-step solution

Fe, Mg, Al and Zn can easily displace H 2 from acids due to more reactivity as they are having more E O P o than hydrogen. Cu, Ag, Au can not do it as they have low E O P o than hydrogen.

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