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NEET levelSingle correct optionDifficulty 1 of 3pb185

Which allotrope of carbon is a good conductor of electricity?

  1. ADiamond
  2. BGraphite
  3. CNeither; all allotropes of carbon are insulators
  4. DBoth diamond and graphite equally

Answer: B

Graphite has one delocalised electron per carbon within layers, so it conducts. Diamond has all four electrons localised in bonds and is an insulator.
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