The standard reduction potential values of three metallic cations, X, Y, Z are 0.5, –3.03 and – 1.18 V respectively. The order of reducing power of the corresponding metals is :

Options

A. Y gt Z gt X
B. XgtYgtZ
C. Z gtY gt X
D. Z gt X gt Y

Explanation

To determine the order of reducing power of the corresponding metals based on their standard reduction potential values, we can follow these steps:

### Step 1: Identify the Standard Reduction Potentials
We have the following standard reduction potential values for the metallic cations:
- \( E^\circ (X) = 0.5 \, \text{V} \)
- \( E^\circ (Y) = -3.03 \, \text{V} \)
- \( E^\circ (Z) = -1.18 \, \text{V} \)

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