Acidic hydride of nitrogen is

Options

A. `NH_3`
B. `N_3 H`
C. `N_2 H_4`
D. `N_2 H_2`

Answer

To determine the acidic hydride of nitrogen, we need to analyze the given options one by one.

### Step-by-Step Solution:

1. **Understanding Acidic Hydrides**:
- Acidic hydrides are compounds that can donate protons (H⁺) in a reaction, typically containing hydrogen and a more electronegative element.

2. **Analyzing the Options**:
- **Option 1: Ammonia (NH₃)**:
- Ammonia is known to be a basic compound. It can accept protons but does not act as an acidic hydride. Therefore, it is not the correct answer.

- **Option 2: Hydrazine (N₂H₄)**:
- The structure of hydrazine is N₂H₄, which can be represented as H₂N-NH₂. This compound is also basic in nature and does not exhibit acidic properties. Thus, this is not the correct answer.

- **Option 3: Hydrazine (N₂H₄)**:
- Similar to the previous analysis, hydrazine is basic and does not qualify as an acidic hydride.

- **Option 4: Azide (N₃H)**:
- The azide ion (N₃⁻) is associated with hydrozoic acid (HN₃), which is known to be an acidic hydride. Hydrozoic acid can donate a proton and thus fits the definition of an acidic hydride.

3. **Conclusion**:
- Based on the analysis, the acidic hydride of nitrogen is **N₃H** (hydrozoic acid).

### Final Answer:
The acidic hydride of nitrogen is **N₃H** (hydrozoic acid).