They are usually very hard and brittle, conduct when being molten or dissolved, and have very high melting and boiling points. Most are soluble in polar solvents such as water. Interestingly, all ionic compounds are solids at room temperature. When they are melted or dissolved in water, it will conduct electricity. Also, when they are combined, they form a crystal, held together by ionic bonds hope that helped
Ionic compounds have high melting and boiling points, are brittle, exist as solids at room temperature, and conduct electricity when molten or dissolved. They are soluble in polar solvents and form crystalline structures. These properties arise from the strong ionic bonds between their constituent ions.
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