Q9 of 30 Page 56

Suppose copper was high up in the reactivity series. Would it still have been such a useful metal? Give reasons

No, it would not have been a useful metal if copper was placed high up in the reactivity series because then it would have been similar to sodium and potassium which reacts violently in the presence of air and then similar precautions (like storing in mineral oil) would have been taken to ensure that no such accident occurs.


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A metal 'X ' acquires a green colour coating on its surface on exposure to air.

(a) Identify the metal and name the process responsible for this change. (b) Name the green coating formed on the metal.

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