Question

Why carbon is a poor conductor of electricity?

Answer 1

Carbon compounds are poor conductors of electricity as they form covalent bonds, so it does not give rise to free electrons ( all electrons are used in making the covalent bond) and as a carbon compound does not dissociate itself into ions, therefore carbon compounds are poor conductors of electricity.
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Answer 2

carbon is poor conducter of electricity due to more intermoleculer space bw their molecule.