Which metal could you use to reduce Mn2+ ions but not Mg2+

Problem 55EWhich metal could you use to reduce ions but not ions Step by step solutionStep 1 of 2 The substances with large positive reduction half-cell potentials show a strong tendency to gainelectrons (reduce) and act as strong oxidizing agents. While the substances with large negativereduction half-cell potentials show a strong tendency to lose electrons (oxidize) and act as strongreducing agentsThe standard reduction potentials and reduction half-reactions for Mn, Mg is