(A) Copper shows electrical conductance in solid as well as molten state whereas copper chloride shows electrical conductance only in molten state. Give reason. [1+1=2]
(B) Draw a diagram of "two dimension square closed packing".
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In case of Cu metal free e− are present which conduct electricity in both liquid and solid states. Where as in CuCl2 ions conduct electricity which become free under molten state only but not in solid state.
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