Assertion :Among the carbon allotropes, diamond is an insulator, whereas, graphite is a good conductor of electricity. Reason: Hybridization of carbon in diamond and graphite is ${s p}^{3}$ and ${s p}^{2}$ , respectively.

Read the above assertion and reason and choose the correct option regarding it.

Both assertion and reason are correct but the reason is the not the correct explanation for the assertion

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Both assertion and reason are correct, and the reason is the correct explanation for the assertion

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Both assertion and reason are incorrect

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Assertion is incorrect statement, but the reason is correct

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Solution

The correct option is B Both assertion and reason are correct, and the reason is the correct explanation for the assertion
Among the carbon allotropes, diamond is an insulator, whereas, graphite is a good conductor of electricity.

Hybridization of carbon in diamond and graphite are ${s p}^{3}$ and ${s p}^{2}$ , respectively.

Diamond has strong covalent bonds and valence electrons are not free to move. Hence, diamond is an insulator. Graphite has delocalised molecular orbitals and delocalised electrons have freedom to move in the delocalised molecular orbitals. Hence, graphite is a good conductor of electricity.
Both assertion and reason are correct, and but reason is not the correct explanation for the assertion.

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Similar questions

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct answer out of the following choices.

(a) Assertion and Reason both are correct statements an Reason is correct explanation for Assertion.

(b) Assertion and Reason both are correct satements but Reason is not correct explanation for Assertion.

(d) Assertion is wrong statement but Reason is correct statement.

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.

Assertion (A) Phenol forms 2, 4, 6-tribromophenol on treatment with $B r_{2}$ in carbon disulphide at 273K.
Reason (R) Bromine polarises in carbon disulphide.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.