Give the preparation reaction of Ammonia.

Explanation

**Step-by-Step Solution:**

1. **Identify the Reactants**: The preparation of ammonia involves two key reactants: nitrogen gas (N₂) and hydrogen gas (H₂).

2. **Write the Balanced Chemical Equation**: The balanced reaction for the synthesis of ammonia is:
\[ N_2(g) + 3H_2(g) \rightarrow 2NH_3(g) \]
...