Question: A dislocation formed by adding an extra half-plane of atoms to a crystal is referred to as a (an) (A) Screw dislocation (B) Vacancy dislocation

A dislocation formed by adding an extra half-plane of atoms to a crystal is referred to as a (an)
(A) Screw dislocation
(B) Vacancy dislocation
(C) Interstitial dislocation
(D) Edge dislocation

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