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Assertion :- (A) Graphite is good cond...

Assertion :- (A) Graphite is good conductor of electricity however diamond belongs to the category of insulators .
Rason (R ) Grapite is soft in anture on the hand diamond is very hard and brittle.

A

Assertion and reason both are corrent statements and reason is correct explanation for assertion.

B

Assertion and reason both are corrent statements but reason is not correct explanation for assertion.

C

Assertion is corrent statement but reason reason is wrong statement.

D

Assertion is wrong statement but reason is correct statement.

Text Solution

Verified by Experts

The correct Answer is:
B
Corrcet Explanation. In graphite, carbon atoms are `sp^(2)`m hybridised and have one free electron. In diamond, these are `sp^(3)` hybridised and there are no free electrons available for electrical conductiviy.
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Assertion (A): Graphite is a good conductor of electricity, however, diamond belongs to the category of insulators. Reason (R): Graphite is soft in nature, on the other hand diamond is very hard and brittle.

Why is graphite a good conductor of electricity but diamond is not?

Assertion (A) : Diamond is a good conductor of electricity Reason (R) : Diamond and graphite are two allotrope carbon and graphite is a good conductor of electricity

Assertion (A) : Graphite is chemically more reactive than diamond . Reason (R) : Diamond is very hard but fraphite si soof .

Assertion (A) : Graphite is soft while diamond is very hard . Reason (R) : Graphite has a hree -dimensional structure while diamond has planer struture .

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

(A) Graphite is soft while diamond is hard. (R) Graphite has three dimensional structure while diamond has planar.

Assertion : Among the carbon allotropes, diamond is an insulater, wherea, graphite is a good conductor of electricity. Reason : Hybridization of carbon in diamond and graphite are sp^3 and sp^2 , respectively.

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