Question

Using the crisscross method, what is the chemical formula for the ionic compound created when potassium (K) combines with Sulfur (S)?

Answer 1

K2S

Step-by-step explanation:

Potassium has a ionic charge of +1 and sulfur has a ionic charge of -2. Swap charges so that Potassium has -2 and sulfur has +1. Drop the charges. It'll be K2 and S1. When doing the crisscross method, you drop the one. Therefore, it is K2S.