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← ScienceWhich consequence results when increased pressure on a sodium chloride crystal exceeds its elastic limit?
A)Cation-anion repulsion overcomes electrostatic attraction
B)Dislocation propagation causes microscopic fracture✓
C)Electron delocalization forms metallic bonds
D)Increased polarization strengthens hydrogen bonds
💡 Explanation
Microscopic fracture from dislocation occurs because pressure causes atoms to shift position where existing dislocations propagate via Peierls-Nabarro stress, therefore, fracture is observed rather than bond changes which would require substantially more energy. Thus, chemical bonds will not break directly.
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