* Identify the ions:
* Lithium (Li) forms a +1 cation (Li⁺).
* Nitrogen (N) forms a -3 anion (N³⁻).
* Balance the charges:
* To achieve a neutral compound, you need three lithium ions (3 x +1 = +3) to balance the charge of one nitride ion (-3).
* Write the formula:
* The ionic formula for lithium nitride is Li₃N.
