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Statement : Schottky defect is generally...

Statement `:` Schottky defect is generally shown by the compounds with high co`-` ordination no.
Explanation `:` Equal no. of cations and anions are missing from the lattice sites in Schottky defect.

A

If both assertion and reason are correct and reason is correct explanation for assertion

B

If both assertion and reason are correct but reason is not correct explanation for assertion

C

If assertion is correct but reason is incorrect

D

If both assertion and reason are incorrect

Text Solution

Verified by Experts

The correct Answer is:
B

Correct Explanation In compounds showing schottky defect, the cations are generally large in size
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In an ideal crystal, the entropy of the constituents at absolute zero temperature (0K) is zero. However, the crystals generally suffer from certain defects also called imperfections They may be both electronic and atomic in nature. The atomic imperfections may be stoichiometric (Schottky and Frenkel defects) or non-stoichiometric (metal excees and metal deficiency defects). In addition to these, there are impurity defects which are caused by the addition of certain impurities of metals and this is known as dopping. The dopping leads to semi conductors which may be either n-type or p-type in nature. Silicon doped with arsenic is

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