Question

(b) Why is diamond very hard ?​

Answer 1

Explanation:

The outermost shell of each carbon atom has four electrons. In diamond, these electrons are shared with four other carbon atoms to form very strong chemical bonds resulting in an extremely rigid tetrahedral crystal. It is this simple, tightly-bonded arrangement that makes diamond one of the hardest substances on Earth.

Answer 2

Explanation:

Diamond Is A Giant Molecule. The Number Of Valence Electrons In Carbon Atom Is Four. As Such Each Carbon Atom Is Linked With Four Neighboring Carbon Atoms. Thus Forming A Rigid Tetrahedral Structure. It Is The Strong Bonding That Makes Diamond The Hardest Substance

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