The balanced chemical equation for the reaction of nitrogen (N₂) and hydrogen (H₂) to form ammonia (NH₃) is:

N₂ + 3H₂ → 2NH₃

Here's how to balance it:

1. Identify the reactants and products:

- Reactants: N₂ and H₂

- Product: NH₃

2. Count the number of atoms of each element on both sides of the equation:

- Left side: 2 N atoms, 2 H atoms

- Right side: 1 N atom, 3 H atoms

3. Balance the nitrogen atoms:

- Put a coefficient of 2 in front of NH₃: N₂ + 3H₂ → 2NH₃

4. Balance the hydrogen atoms:

- Put a coefficient of 3 in front of H₂: N₂ + 3H₂ → 2NH₃

Now the equation is balanced:

- 2 N atoms on both sides

- 6 H atoms on both sides