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Q.

Which of the following statement ( s ) is/are correct?

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a

Frenkel defects occur when difference in size of cations and anions is large

b

Schottky defects occur when cations and anions have similar ionic size

c

All ionic crystal can have both frenkel and schottky defects

d

Chromium is diamagnetic

answer is B, A.

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Detailed Solution

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Shottky defect occur when cation & and anion are similar in size but the size of cation & anion are different in Frenkel defect. Ionic crystals have both schottky frenkel defects. Pure IA don’t have Frenkel defect.

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