1. Determine the Charges:
* Potassium (K) is in Group 1 of the periodic table, so it forms a +1 ion (K⁺).
* Sulfur (S) is in Group 16 of the periodic table, so it forms a -2 ion (S²⁻).
2. Balance the Charges:
To create a neutral compound, the total positive charge must equal the total negative charge. We need two potassium ions (2 x +1 = +2) to balance the -2 charge of one sulfur ion.
3. Write the Formula:
The formula for the ionic compound is K₂S.
