Q.

lonic lattice has two major points defects, (1) Schottky (2) Frenkel defects Schottky defects occurs due to the cation-anion pair's missing from the lattice sites. Frenkel defects occurs when an ion leaves its lattice site and fits into an interstitial space. The neutrality of the crystal is being maintained and we considered all losses from interstitial positionsWhich defect decreases density of the crystal?Structure shown here represents: Structure shown here represents:

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a

Frenkel defect

b

Schottky defect

c

excess metal defect

d

interstitial defect

e

Schottky defect

f

Frenkel defect

g

Metal excess defect

h

None of these

i

Schottky defect

j

Frenkel defect

k

vaccancy defect

l

metal excess defect

answer is , , .

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Detailed Solution

ion pairs missing in schottky defect, therefore involves loss in masscation misses lattice point and moves to interstitial positionwhen a salt is heated with its own metal it ionizes and forms cations and electrons
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