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Assertion : Diamond is a bad conductor.
Reason : Graphite is a good conductor.
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Reason : Graphite is a good conductor.
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If both assertion and reason are true but assertion is not a correct explanation of the assertion.
In diamond, each carbon atom is in $s p^3$ hybridised state and linked to four other carbon atoms tetraherallyby covalent bonds. Since there is no mobile electron present, diamond is a bad conductor of heat and electricity.
In graphite each carbon atom is in $s p^2$ hybridised state and is linked to three other carbon atoms in a hexagonal planar structure. The $\pi$-electrons are free to move throughout the entire layers, therefore graphite is a good conductor of heat and electricity.
In graphite each carbon atom is in $s p^2$ hybridised state and is linked to three other carbon atoms in a hexagonal planar structure. The $\pi$-electrons are free to move throughout the entire layers, therefore graphite is a good conductor of heat and electricity.
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