Here's how to write the balanced chemical equation for lithium (Li) reacting with nitrogen nitride (N₂):

1. Identify the Reactants and Products:

* Reactants: Lithium (Li) and Nitrogen nitride (N₂)

* Products: Lithium nitride (Li₃N)

2. Write the Unbalanced Equation:

Li + N₂ → Li₃N

3. Balance the Equation:

* Lithium (Li): We need 3 lithium atoms on the left side to match the 3 on the right.

* Nitrogen (N): The nitrogen atoms are already balanced.

4. The Balanced Equation:

6 Li + N₂ → 2 Li₃N