A defect in a crystal that affects only a single particle in the lattice is called a(n) _____.

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A point defect is a type of crystal defect that only affects a single particle in the lattice. This could include vacancies (an empty space where an atom should be), interstitials (an extra atom squeezed into an interstitial site in the lattice), or substitutional impurities (an atom of a different element replacing a regular lattice atom). Plane defects and line defects affect multiple particles in the lattice, while edge dislocations and deformation are specific types of line defects.

A Defect in a Crystal That Affects Only a Single