Which metal gives `NH_(4)NO_(3)`, when react with dilute `HNO_(3)` acid?

Options

A. `Zn`
B. `Pb`
C. `Cu`
D. `Au`

Explanation

To determine which metal gives ammonium nitrate (NH₄NO₃) when reacting with dilute nitric acid (HNO₃), we can follow these steps:

### Step 1: Identify the Reaction
We need to identify the reaction between metals and dilute nitric acid. Generally, metals react with dilute nitric acid to form nitrates and other products.

### Step 2: Consider the Metal Zinc
Among common metals, zinc is known to react with dilute nitric acid. The reaction can be represented as follows:

\[ \text{Zn} + 2 \text{HNO}_3 \rightarrow \text{Zn(NO}_3\text{)}_2 + \text{NH}_4\text{NO}_3 + \text{H}_2\text{O} \]

In this reaction, zinc nitrate (Zn(NO₃)₂) and ammonium nitrate (NH₄NO₃) are formed, along with water.

### Step 3: Analyze Other Metals
Other metals such as lead, copper, and gold do not react with dilute nitric acid to produce ammonium nitrate. They either do not react or produce different products.

### Step 4: Conclusion
Based on the reactions considered, the metal that gives ammonium nitrate when reacting with dilute nitric acid is zinc.

### Final Answer
The metal that gives NH₄NO₃ when reacting with dilute HNO₃ is **Zinc**.

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