Which of these metals is not corrosive in nature?

Options

A. Iron
B. Silver
C. Copper
D. Platinum

Answer

To determine which of the metals listed is not corrosive in nature, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Corrosion**: Corrosion is the process where metals react with moisture and air, leading to deterioration. Non-corrosive metals do not easily react with these elements.

2. **List the Metals**: The metals given in the question are:
- Iron
- Silver
- Copper
- Platinum

3. **Reactivity Series**: Metals can be arranged in a reactivity series based on their reactivity. The more reactive a metal is, the more likely it is to corrode. The general order of reactivity for the metals listed is:
- Iron (more reactive)
- Copper (less reactive than iron)
- Silver (less reactive than copper)
- Platinum (least reactive)

4. **Identify the Least Reactive Metal**: From the reactivity series, we can see that platinum is the least reactive metal among the four listed.

5. **Conclusion**: Since platinum is the least reactive, it is the metal that is not corrosive in nature. Therefore, the answer to the question is **platinum**.

### Final Answer:
Platinum is the metal that is not corrosive in nature.

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