no liquid ionic compound are known ,but many of of the known covalent compounds are liquids and some are gases. account for these differences

Explanation:

No liquid ionic compounds are known but many of the unknown covalent compound are liquid, and some are gases. ... Although it is true that many ionic compounds have melting points above room temperature, not all do. Ionic liquids do exist at room temperature. A good example is the trihydrate of zinc chloride.

i believe that it is a exoplanet

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.