Assertion :Ionic compounds are generally hard solids but brittle in nature. Reason: Brittleness is because of shift in alignment of its ions. Hardness i due to the strong forces of attraction

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
In ionic compounds, the ions are strongly held in lattice due to the strong forces of attraction between the positive and negative ions. This imparts hardness to the compounds
However, due to application of pressure, the layers of ion shift slightly due to which similar charge comes together which generates repulsive force and breaks down the lattice. Hence, they are brittle in nature.
Hence, both assertion and reason are correct and reason is the correct explanation of 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.

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