Use the data given in Q.8 and find out the most stable ion in its reduced form.

Options

A. `Cl^(-)`
B. `Cr^(3+)`
C. Cr
D. `Mn^(2+)`

Explanation

To determine the most stable ion in its reduced form using the data from question 8, we will follow these steps:

### Step-by-Step Solution:

1. **Identify the Relevant Data**:
- Review the data provided in question 8. This typically includes standard reduction potentials (E° values) for various half-reactions involving different ions.

2. **List the Reduction Potentials**:
- Write down the standard reduction potentials for the ions mentioned in question 8. The higher the E° value, the more favorable the reduction process.

3. **Compare the E° Values**:
- Compare the E° values of the ions. The ion with the highest E° value is the most stable in its reduced form because it has a greater tendency to gain electrons.

4. **Identify the Most Stable Ion**:
- From the comparison, identify which ion has the highest E° value. This ion is the most stable in its reduced form.

5. **Conclusion**:
- State the ion that is the most stable in its reduced form based on the E° values.

### Example Calculation:
Assuming the data from question 8 provided the following E° values:
- Ion A: E° = +0.76 V
- Ion B: E° = +0.34 V
- Ion C: E° = +0.80 V

From this data:
- Ion C has the highest E° value (+0.80 V), making it the most stable ion in its reduced form.

### Final Answer:
The most stable ion in its reduced form is Ion C.

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