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OCW Scholar - Introduction to Solid State Chemistry
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OpenStudy (rishabh.mission):
sodium metal is quite soft whereas sodium chloride crystals are quite hard .explain why?
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OpenStudy (anonymous):
sodium metal has atoms which can slide over each other easily, whereas sodium chloride has sodium and chloride ions which are held together by electrostatic forces ...and they have a lattice structure. (Sodium metal: metallic bonding, NaCl: ionic bonding)
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