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Shyam Dubey • 3.70K Points
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Q. Which allotrope of carbon is the hardest natural substance?

  • (A) Graphite
  • (B) Charcoal
  • (C) Diamond
  • (D) Fullerene
  • Correct Answer - Option(C)
  • Views: 1
  • Filed under category Chemistry
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Explanation by: Shyam Dubey
Diamond has a three-dimensional tetrahedral network of carbon atoms, making it the hardest known natural substance. Graphite and fullerene are much softer.

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