What makes graphite soft and a good conductor of electricity?
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Graphite is a covalent solid that act as a good conductor of electricity and is soft.
The carbon atoms of graphite are prescribed in different layers and are covalently bonded to three of its surrounding atoms in the same layer.
The fourth valence electron of each atom is present between different layers and is free to move which makes graphite a good conductor of electricity.
The characteristic of sliding between different layers makes graphite a soft solid and a good solid lubricant.