The correct increasing order of reducing power of the metals is:
K+/K = –2.93 V |
Ag+/Ag = 0.80 V |
Hg2+/Hg = 0.79 V |
Mg2+/Mg = –2.37 V |
Cr3+/Cr = – 0.74 V |
1. Cr < Mg < K < Ag < Hg
2. Mg < K < Ag < Hg < Cr
3. K < Ag < Hg < Cr < Mg
4. Ag < Hg < Cr < Mg < K
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