5. Give reason for the following : (i) Metals are good conductors of electricity whereas non-metals are not. (ii) Ionic compounds have usually high melting and boiling points.
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Explanation:
1) Ionic compounds have strong bonds. They require more heat for breaking.
2)Metals are known to provide an easy path for flow of electrons as they have free electrons. So they conduct electricity as compared to nonmetals.
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