A student did experiments to establish the relative reactivity ofmetallic Zn, Cu, and Pb. The following observations were made:
(a) both Zn and Pb metals reacted with 6M HCl, but Cu metaldid not;
(b) there was no reaction between lead(II) sulfate solution (PbSO4) and Cu metal, but there was a reactionbetween PbSO4 solution and Zn metal.
3. List the three metals and hydrogen in order of relative reactivity