Multiple choice

Which of the following metals is the most reactive?

  1. Calcium

  2. Iron

  3. Aluminium

  4. Copper

  5. Lead

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A Correct answer
Explanation

Calcium is the most reactive according to the reactivity series (activity series) of metals. Decreasing chemical reactivity is: K > Na > Ca > Mg > Al > Zn > Fe > Sn > Pb > H > Cu > Hg > Ag > Au