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← ScienceWhich consequence results when excessive mechanical stress fractures solid NaCl?
A)Brittle cleavage along crystal planes✓
B)Free radical formation increases sharply
C)Delocalized electron bands suddenly form
D)Dislocations entangle, causing plastic deformation
💡 Explanation
Mechanical stress causes brittle cleavage, due to electrostatic interactions within the ionic lattice. Applied force overcomes electrostatic attraction during Fracture Mechanics because planes shift relative to alternating ion charges; Therefore, brittle cleavage happens, rather than ductile yielding which requires mobile dislocations.
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