Question

why graphite a good conductor of heat and electricity but not diamond

Answer 1

Graphite can conduct electricity because of the delocalised (free)

electrons in its structure. These arise because each carbon atom is only

bonded to 3 other carbon atoms. This leaves 1 electron to become

delocalised. However, in diamond, all 4 outer electrons on each carbon

atom are used in covalent bonding, so there are no delocalised electrons for conduction of electricity.

Answer 2

here is the answer

Graphite can conduct electricitybecause of the delocalised (free) electrons in its structure. These arise because each carbon atom is only bonded to 3 other carbon atoms. ... However, in diamond, all 4 outer electrons on each carbon atom areused in covalent bonding, so there are no delocalised electrons.

HOPE IT HELPS YOU. ....