* Identify the ions:
* Potassium (K) forms a +1 cation (K⁺).
* Nitrogen (N) forms a -3 anion (N⁻³).
* Balance the charges: To achieve a neutral compound, you need three potassium ions (+3 total charge) to balance one nitride ion (-3 charge).
* Write the formula: The empirical formula is K₃N.
