Answer: The correct answer is Option 2.
Step-by-step explanation:
For the given chemical equation:
![N_2+3H_2\rightarrow 2NH_3](https://img.qammunity.org/2020/formulas/chemistry/high-school/y1bta159z5h4vg7l3qjwkdyo07vkrtxamo.png)
By Stoichiometry of the reaction:
1 molecule of nitrogen is reacted with 3 molecules of hydrogen gas to produce 2 molecules of ammonia molecule.
Hence, the correct answer is Option 2.