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Question

The crystal structure of pure silicon is like:

A
diamond
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B
graphite
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C
silver
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D
zinc
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Solution

The correct option is C diamond
Silicon crystallizes in the same pattern as diamond. In a structure which Ashcroft and Mermin call 'two interpenetrating face - centred cubic" primitive lattices. The lines between silicon atoms in the lattice illustration indicate nearest - neighbour bonds. The cube side for silicon is 0.543nm

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