Which one of the following is the <strong>CORRECT</strong> arrangement of metals in the decreasing order of their reactivity?

  1. A. Iron, Sodium, Silver, Copper
  2. B. Silver, Copper, Iron, Sodium
  3. C. Sodium, Copper, Silver, Iron
  4. D. Sodium, Iron, Copper, Silver

Correct Answer: D. Sodium, Iron, Copper, Silver

Explanation

According to the reactivity series of metals, the order of decreasing reactivity is Sodium (most reactive), Iron, Copper, and Silver (least reactive).

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