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    Question

    Why is diamond significantly harder than graphite?

    A The tetrahedral structure of diamond Correct Answer Incorrect Answer
    B Differences in crystalline structures Correct Answer Incorrect Answer
    C Variances in atomic layering Correct Answer Incorrect Answer
    D None of these Correct Answer Incorrect Answer

    Solution

    Diamond's extreme hardness is due to its tetrahedral lattice structure, where each carbon atom is bonded to four others in a three-dimensional network, providing unmatched hardness and durability.

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