Ionic Compound: Metal and non-metal, losing or gaining of electrons, electrostatic attraction between oppositely charged ions, lattice structure, higher melting and boiling points, low volatilities, soluble in water, conduct electricity in liquid state, Covalent Compound: non-metals, sharing of electrons, electrostatic attraction between a shared pair of electrons, consist of molecules , lower melting and boiling points, may be volatile, may be insoluble in water, do not conduct electricity,

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