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Assertion : Diamond is a bad conductor ....

Assertion : Diamond is a bad conductor .
Reason : Graphite is a good conductor.

A

If both the assertion and reason are true and reason is correct explanation of the assertion .

B

If both the assertion and reason are true but reason is not a correct explanation of the assertion .

C

If the assertion is true but the reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
B
In diamond , each carbon atom is in ` sp^(3)` hybridised state and linked to four other carbon atoms tetraherally by covalent bonds. Since there is no mobile electron present , diamond is bad conductor of heat and electricity .
In graphite each carbon atom is in ` sp^(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 good conductor of heat and electricity .
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