Answer:
In
Schottky defect, presence of holes, because of missing ions, lowers the density
of crystal.
Schottky
Frenkel
defect
1. Some ions are
missing from their normal sites.
Ions do not leave
the lattice but occupy position elsewhere in it.
2. It lowers the
density of crystals.
No change in density
of crystal.
3. e.g.,
e.g.,
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