What is the formula for potassium oxide?

The chemical formula for potassium oxide is K2O. It is a compound composed of two potassium cations (K+) and one oxide anion (O2-). Potassium oxide is an ionic compound, meaning that it is made up of positively and negatively charged ions.

Potassium oxide is a white, crystalline solid at room temperature. It is highly reactive and will react strongly with water to form potassium hydroxide. Potassium oxide is typically used in the manufacturing of glass, ceramics, and as a drying agent.

To write the formula for potassium oxide, the charges of the potassium cation and oxide anion must balance out to create a neutral compound. In this case, the potassium ion has a charge of +1 and the oxide anion has a charge of -2. Therefore, two potassium ions are needed to balance out the one oxide ion, resulting in the formula K2O.