Non-metals are elements that generally cannot conduct electricity. They are the second-largest class of elements after metals. Unlike metals, they have no free electrons.
- Carbon is the only non-metal which conducts electricity. It is classified as a semi-metal when it is in the form of graphite.
- In a graphite molecule, one valence electron of each carbon atom remains free, making graphite a good conductor of electricity.
- Whereas in diamond, they have no free mobile electron. Hence, there won’t be a flow of electrons. That is the reason behind the diamond is bad conductor electricity.
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