Work Step by Step
K ions have a +1 charge, and O ions have a -2 charge. Thus, the correct formula to make the charges balanced and the molecule neutral is: $K_2O$.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.