Given the standard electrode potentials,$K^{+}/K = -2.93 \, V$,$Ag^{+}/Ag = 0.80 \, V$,$Hg^{2+}/Hg = 0.79 \, V$,$Mg^{2+}/Mg = -2.37 \, V$,and $Cr^{3+}/Cr = -0.74 \, V$,arrange these metals in their increasing order of reducing power.

  • A
    $Ag < Hg < Cr < Mg < K$
  • B
    $K < Mg < Cr < Hg < Ag$
  • C
    $Ag < Hg < Cr < K < Mg$
  • D
    $Mg < K < Cr < Hg < Ag$

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