Multiple choice

Why is diamond very hard?

  1. the carbon atoms are arranged in a strong lattice

  2. the carbon atoms are arranged in a weak lattice

  3. the carbon only forms 2 bonds

  4. It's hard to break
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A Correct answer
Explanation

Diamond is extremely hard because each carbon atom is covalently bonded to four other carbon atoms in a rigid, giant tetrahedral lattice structure, which requires significant energy to break.

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