Chemistry 0620 · IGCSE · Giant covalent structures

Giant covalent structures — practice question

Diamond is very hard and is a non-conductor of electricity. Which statement accounts for these properties?

  • AIt has a lattice of positive carbon ions in a ‘sea of electrons’.
  • BIt has delocalised electrons and each carbon atom forms three covalent bonds with other carbon atoms.
  • CIt has no delocalised electrons and each carbon atom forms four covalent bonds with other carbon atoms.
  • DIt has strong ionic bonds between each carbon atom.

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