Lattice Defects Quiz

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Questions and Answers

What is a vacancy in the context of lattice defects?

An impurity atom at the regular lattice position
An atom trapped in the interstitial point
An atom missing from a regular lattice position (correct)
A region of localized lattice distortion

What is an interstitialcy in the context of lattice defects?

An atom missing from a regular lattice position
An atom trapped in the interstitial point (correct)
A pair of cation and anion missing from the lattice
A region of localized lattice distortion

Which type of defect occurs when an anion is displaced from a regular site to another site?

Vacancy
Schottky defect
Frenkel defect (correct)
Interstitialcy

What characterizes a Schottky defect in a crystal lattice?

<p>A pair of cation and anion missing (D)</p> Signup and view all the answers

What is a dislocation in the context of lattice defects?

<p>The region of localized lattice distortion which separates the slipped and unslipped portion of the crystal (A)</p> Signup and view all the answers

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Study Notes

Lattice Defects

A vacancy is a type of lattice defect where an atom or ion is missing from its regular lattice site.
An interstitialcy is a type of lattice defect where an atom or ion occupies a position between regular lattice sites.
A Frenkel defect occurs when an anion is displaced from a regular site to an interstitial site, resulting in a vacancy and an interstitialcy.

Schottky Defects

A Schottky defect is characterized by a pair of vacancies, one of each type of ion (anion and cation), which maintain the electrical neutrality of the crystal lattice.

Dislocations

A dislocation is a type of lattice defect that occurs when there is a linear defect in the crystal lattice, resulting in a disruption of the regular arrangement of atoms or ions.