Graphite is a good conductor of electricity because it has delocalised electrons. The structure of graphite is formed by every carbon covalently bonding itself to three other carbon atoms.
The carbon atoms are arranged in sheets and are tightly bound. Graphite exhibits reduced shearing strength under friction force because the bonds holding the sheets together are weak.
Graphite is a non-metal
Graphite is an excellent conductor of electricity
Graphite and diamond are isomers of carbon.
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