(i) Ionic solids do not conduct electric current, but once melted or dissolved, the solutions pass electric current.
(ii) Their melting and boiling Points are high.
(iii) Ionic compounds are solids at room temperature.
(i) Covalent compound whether solid or in solution does not pass electricity through them.
(ii) Their melting and boiling points are low.
(iii) Covalent compounds are liquids or gases at room temperature.
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