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The Peierls stress (stress required to move the dislocation) will be least in which type of crystal element?

The Peierls stress (stress required to move the dislocation) will be least in which type of crystal element? Correct Answer Metallic compound

Covalent solid have strong directional bonds, so the width of dislocation is low. Ionic crystal has large interatomic distance. In intermetallic compound, favorable slip system and directions are absent. So, in the metallic system, it is easiest to move a dislocation, that is why generally metal is ductile.

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