# Which of these would most likely be a strong electrolyte?

1. An ionic compound
2. A covalent compound
3. A polar compound
4. A nonpolar compound

Previously, I have been taught that polar compounds can be either strong or weak electrolytes. I also learned that ionic compounds are generally strong. Therefore, my guess would be a, an ionic compound. However, I am not entirely sure of my answers. Could you please explain to me how I could confirm and get the right answer? Thank you!

Yes. You are right. Ionic compound are strong electrolytes if they are soluble in water. $$\ce{CaF2, BaSO4}$$ are ionic compounds, but they are not soluble in water. I would not consider them as strong electrolytes. On the other hand, ionic compounds are a part of the bigger family of the polar compounds. But polar compounds are not always strong electrolytes. $$\ce{CO, H2S, HF, H2O}$$ are polar, but they are not strong electrolytes.