Action of water or dilute mineral acids on metals can give

Options

A. Monohydrogen
B. Tritium
C. Dihydrogen
D. Trihydrogen

Answer

To solve the question regarding the action of water or dilute mineral acids on metals, we can follow these steps:

### Step 1: Understand the Reaction
When metals react with water or dilute mineral acids, they typically undergo a chemical reaction that results in the formation of a salt and the liberation of hydrogen gas.

### Step 2: Identify the Products
For example, if we take zinc (a common metal) and react it with dilute sulfuric acid (H₂SO₄), the reaction can be represented as:
\[ \text{Zn} + \text{H}_2\text{SO}_4 \rightarrow \text{ZnSO}_4 + \text{H}_2 \uparrow \]
Here, zinc sulfate (ZnSO₄) is formed, and hydrogen gas (H₂) is liberated.

### Step 3: Determine the Type of Hydrogen Produced
The hydrogen gas produced in this reaction is dihydrogen (H₂), which is the molecular form of hydrogen consisting of two hydrogen atoms.

### Step 4: Analyze the Options
Now, let's analyze the given options:
1. Monohydrogen (H) - This is not stable and does not form in this reaction.
2. Tritium (T) - This is a radioactive isotope of hydrogen and does not form in this reaction.
3. Dihydrogen (H₂) - This is the correct product formed during the reaction.
4. Trihydrogen (H₃) - This is not a stable form of hydrogen.

### Step 5: Conclusion
Based on the analysis, the correct answer is **dihydrogen (H₂)**, which is option three.

### Final Answer
The action of water or dilute mineral acids on metals can give **dihydrogen (H₂)**.

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