stoichiometry defects in solid

                                       Defects in solids

Crystal defect - Any type of deviation or irregularities in ideal arrangement is called crystal defect

These are of two types:-

1.point defect:-these are irregularities from ideal arrangement around a point in crystalline substance.

2.Line defect:-These are irregularities or deviation from ideal arrangement around entire row of lattice point in crystalline solid.

Types of point defect:-

1. Stoichiometric defect:-These are point defect that do not disturb the stoichiometry of solid or formula of solid.

these are also known as thermodynamic defect or intrinsic defect.

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Type of stoichimetric defects:-

1.vaccancy defects:-when some constituent particles are missing from crystalline solids known as vaccancy defects.

2.Interstitial defect:-in this defect some constituent particles are introduced in interstitial sites of crystalline solids is known as interstitial defect.

3.Frenkel defect:-The missing of ion from its normal position and occupy in interstitial position known as frenkel defect.

4.Shottky defect:-complete missing of equal number of cation and anion from crystal lattice is known as shottky defect.

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