Which of the following has highest electrode potential

Options

A. Li
B. Cu
C. Au
D. Al

Answer

To determine which of the given elements has the highest electrode potential, we will analyze the electrode potentials of each element provided in the question.

### Step-by-Step Solution:

1. **Identify the Electrode Potentials**:
We need to look at the standard electrode potentials (E°) for each of the ions provided:
- Lithium (Li⁺): E° = -3.05 V
- Copper (Cu²⁺): E° = +0.34 V
- Silver (Ag⁺): E° = +0.80 V (Note: The video transcript mentions a value of +1.672, which seems to be incorrect. The standard value for Ag⁺ is +0.80 V.)
- Aluminium (Al³⁺): E° = -1.67 V

2. **Compare the Electrode Potentials**:
Now we will compare the values:
- Li⁺: -3.05 V
- Cu²⁺: +0.34 V
- Ag⁺: +0.80 V
- Al³⁺: -1.67 V

3. **Determine the Highest Electrode Potential**:
From the comparison, we can see that the highest value is +0.80 V for Silver (Ag⁺).

4. **Conclusion**:
Therefore, the element with the highest electrode potential among the given options is Silver (Ag⁺).

### Final Answer:
The element with the highest electrode potential is **Silver (Ag⁺)** with a value of +0.80 V.

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