Which metal is placed at the top of the reactivity series?
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A.
Iron
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B.
Copper
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C.
Silver
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D.
Potassium
Correct Answer:
D. Potassium
Explanation:
Potassium is the metal located at the top of the reactivity series. The reactivity series ranks metals by their chemical reactivity, with the most reactive elements at the top. Potassium is highly reactive because it easily loses its single valence electron to form a positive ion, resulting in vigorous reactions with water and acids. According to the provided options, Potassium (Option D) is the correct answer.
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