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Why can graphite conduct electricity but diamond can not?

In diamond the carbon atoms are bonded to four other atoms. Whereas, in graphite each carbon atom is only bonded to three other atoms. Therefore, there are delocalised (free) electrons in graphite, which can move and carry a charge so graphite conducts electricty.

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Andrea P.

Degree: Geography (Bachelors) - Durham University

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Degree: Economics (Bachelors) - Bristol University

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Sophie S.

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Degree: Biochemistry (MBiochem) (Masters) - St. Andrews Unversity University

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