Which of the following has two dimensional sheet like structure?
A
Diamond
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B
Silica
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C
Graphite
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D
Lead
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Solution
The correct option is B Graphite
Graphite has a two-dimensional sheet-like structure. Each carbon atom is covalently bonded to three other carbon atom and the fourth electron forms a π bond. The various layers are held together by weak van der Waals forces of atoms. This is the reason graphite has a soft and slippery structure.