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CGP EDU Academic Team
Published on: August 14, 2026
The standard electrode potential 
values of A1 3 +/A1, Ag+/Ag, K+/K and Cr 3+ /Cr are -1.66 V, 0.80 V, -2.93 V and -0.74 V, respectively. The correct decreasing order of reducing power of the metal is
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Lesser is the reduction potential greater is the reducing power.
Reduction Potential: Ag+/Ag > Cr 3 +/Cr > Al 3+ / A1 > K + /K
Reducing Power : K > Al > Cr > Ag
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