Which metals do not react with water at all ?

Options

A. Pb
B. Zn
C. Cu
D. Both (a) and (c )

Explanation

**Step-by-Step Solution:**

1. **Understanding Metal Reactivity with Water:**
- Metals can react with water in different ways. Some metals react vigorously with water, while others do not react at all. The reactivity of metals with water depends on their position in the reactivity series.

2. **Identifying Metals That Do Not React with Water:**
- Among common metals, we need to identify those that do not react with water at all, whether it is cold or hot water.

3. **Analyzing Specific Metals:**
- **Lead (Pb):** Lead does not react with water because it forms a protective oxide layer on its surface. This layer prevents further reaction with water.
- **Copper (Cu):** Copper is below hydrogen in the reactivity series. Since hydrogen cannot be displaced by copper, it does not react with water.

4. **Conclusion:**
- The metals that do not react with water at all are **Lead (Pb)** and **Copper (Cu)**.

**Final Answer:**
The metals that do not react with water at all are Lead (Pb) and Copper (Cu).

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