Question

What are point defects describe scott key defects in crystals?

Answer 1

Answer:

Point defect --- Imperfections/ Irregularities in arrangement of constituent particles in an atom in Crystal is called point defect.

Schotky defect --- It is stoichiometric (particles missing from Crystal lattice in same no. without disturbing stoichiometry) , ionic defect

in this, size of anion is similar to size of cation . for e.g, NaCl, KCl,AgBr etc.

if Crystal is heated with high temp some particles missing from Crystal lattice .

at a time both anion and cation are escaping in equal proportion and form anionic and cation vacancy respectively.

due to this defect...

Density of Crystal decrease

stability of Crystal decrease

Answer 2

Answer:

point defects are irregularities produced in the arrangement of basis at lattice points in crystalline solid.