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← ScienceWhich outcome increases in a sodium chloride crystal when subjected to mechanical stress?
A)Increased formation of Frenkel defects✓
B)Enhanced electron-hole recombination rate
C)Increased covalent bond characteristics
D)Suppressed phonon-mediated ionic conductivity
💡 Explanation
Increased stress causes lattice distortions that promote ion displacement, thus augmenting Frenkel defect population via the Frenkel defect formation mechanism. Therefore, more defects arise, rather than phonon interference or covalent interactions, because the stress impacts ionic positions physically.
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