Given that the standard electrode` (E^(@))` of metals are :
`K^(+)//K=- 2.93 V, Ag^(+)//Ag = 0.80 V, `
` Mg^(2+)//Mg =- 2.37 V, Cr^(3+)// Cr =- 0.74 V, Hg^(2+)//Hg = 0.79 V`.
Arrange these metals in an increasing order of their reducing power.

Explanation

To arrange the given metals in increasing order of their reducing power based on their standard electrode potentials, we can follow these steps:

### Step 1: Understand the Relationship between Standard Electrode Potential and Reducing Power
The standard electrode potential (E°) indicates how easily a species can be reduced. A more negative E° value means that the species is more easily oxidized, thus acting as a stronger reducing agent. Therefore, the reducing power increases as the standard electrode potential becomes more negative.

### Step 2: List the Given Standard Electrode Potentials
We have the following standard electrode potentials:
- \( K^{+} // K = -2.93 \, V \)
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