State True or False
Metallic anodes more reactive than platinum tend to pass into the solution instead of `O_(2)` being produced.

Explanation

To determine whether the statement "Metallic anodes more reactive than platinum tend to pass into the solution instead of O₂ being produced" is true or false, we can analyze the concepts of reactivity and oxidation potential.

### Step-by-Step Solution:

1. **Understanding Reactivity and Oxidation Potential**:
- Metals have varying reactivities, which can be measured by their oxidation potentials. The more reactive a metal is, the higher its tendency to lose electrons and undergo oxidation.

2. **Comparison with Platinum**:
- Platinum is a noble metal with a relatively low reactivity. It does not easily oxidize and is often used as an inert electrode in electrochemical cells.

3. **Oxidation of Water**:
- In an electrochemical cell, water can be oxidized to produce oxygen gas (O₂) at the anode. This reaction typically occurs when there are no more reactive metals present.

4. **Reactivity of Metals Compared to Water**:
- If a metallic anode is more reactive than platinum, it means that it has a higher oxidation potential than water. This implies that the metal will preferentially oxidize instead of water.

5. **Conclusion**:
- Since metals that are more reactive than platinum will oxidize and dissolve into the solution rather than allowing water to oxidize to produce O₂, the statement is true.

### Final Answer:
**True**: Metallic anodes more reactive than platinum tend to pass into the solution instead of O₂ being produced.

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