A compound cosists of only ions. What is not true for it?
It has low M.P. and low B.P..
It has a strong force of attraction between its particles.
It is made up of elements with large difference in their electronegativities.
it has a hard crystalline structure.
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Answer: Ionic compounds have high melting points. Ionic compounds are hard and brittle. Ionic compounds dissociate into ions when dissolved in water. Solutions of ionic compounds and melted ionic compounds conduct electricity, but solid materials do not. Ionic compounds are held together by electrostatic forces between the oppositely charged ions . ... As the ionic lattice contains such a large number of ions, a lot of energy is needed to overcome this ionic bonding so ionic compounds have high melting and boiling points.
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