Chemistry / Chem 1454 · Atom · ~20 seconds
Ionic Solids
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An ionic solid is held by electrostatic attraction between ions, giving high melting points and hardness combined with brittleness.
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Sodium chloride does not conduct as a solid, since its ions sit fixed, but conducts once melted or dissolved.
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Ionic solids shatter rather than bend, since shifting a layer of ions misaligns like charges into repulsion.