Question

What are point defects?
chemisry class xii
solid state

Answer 1

Answer:

Point defects are where an atom is missing or is in an irregular place in the lattice structure. Point defects include self interstitial atoms, interstitial impurity atoms, substitutional atoms and vacancies.

Explanation:

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Answer 2

Point defects are the defects which are located at decrete points. These defects are also known as Zero dimensional defects or localised defects .

Point defects are of two types :-

1- Stichiometric defects :-Defects in which Stichiometry as well as neutrality is maintained .
Two types of Stichiometric defects
a). Schottky defects
b) Frenklen defects
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2- Non- Stichiometric defects :- Defects in which Stichiometry is not maintained but neutrality is mainated .

Two types of non - Stichiometric defects
a)Metal excess defect
b) Metal deficiency defect
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Hope it helps you dear☺️

Neha #