Graphite is a good conductor of electricity because it has:

free moving protons

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free moving electrons

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no electrons

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non moving electrons

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Solution

The correct option is B free moving electrons
Graphite is a good conductor of electricity because it has free moving (delocalised) electrons. The structure of graphite is formed by every carbon bonding itself to three other carbon atoms. The last electron in every carbon atom is not bonded with any other carbon atom and is free to move. Therefore graphite has the ability to conduct electricity.

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