23
Question
A non-metal which is a good conductor of electricity is:
A non-metal which is a good conductor of electricity is:
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Solution
The correct option is C graphite
1) Graphite is soft and slippery because there
are only weak intermolecular forces between its layers. Graphite is a good conductor
of heat and electricity.
2) Graphite can conduct electricity because
of the delocalised (free) electrons in its structure.
3) These arise because each carbon atom is only
bonded to 3 other carbon atomsHowever, in diamond, all 4 outer electrons on each
carbon atom are used in covalent bonding, so there are no delocalised electrons.
4) These electrons in graphite are free to move
through the structure.
1) Graphite is soft and slippery because there are only weak intermolecular forces between its layers. Graphite is a good conductor of heat and electricity.
2) Graphite can conduct electricity because of the delocalised (free) electrons in its structure.
3) These arise because each carbon atom is only bonded to 3 other carbon atomsHowever, in diamond, all 4 outer electrons on each carbon atom are used in covalent bonding, so there are no delocalised electrons.
4) These electrons in graphite are free to move through the structure.
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