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Which one of the following statements about diamond and graphite is not correct?

Options

  1. ADiamond has tetrahedral structure, whereas graphite has a hexagonal planar structure.
  2. BBoth physical and chemical properties of diamond and graphite are different.
  3. CGraphite is soft but diamond is hard.
  4. DGraphite is a good conductor of electricity while diamond is not.

Correct answer

B. Both physical and chemical properties of diamond and graphite are different.

Step-by-step solution

Since they are both made of carbon their chemical properties are the same. Graphite has a layered sheet-like structure with each layer consisting of hexagonal rings, this is because all carbon atoms are sp2 hybridised. Diamond has a tetrahedral structure since all carbon atoms are sp 3 hybridised.

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