Assertion :Large number of Schottky defects lead to lowering in density of crystal lattice. Reason: The defect is due to missing cation and anion. Equal numbers of cations and anions are missing to maintain electroneutrality.

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

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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Assertion is incorrect but Reason is correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
A large number of Schottky defects lead to lowering in a density of crystal lattice. The defect is due to missing cation and anion. An equal number of cations and anions are missing to maintain electroneutrality.

When an ion leaves its correct lattice site and occupies an interstitial site, Frenkel defect is observed. Hence, the density of the crystal is not affected.

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

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