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← ScienceIn a sodium chloride crystal under high pressure (~25 GPa), which outcome related to NaCl's ionic nature predominates?
A)Increased electron orbital hybridization
B)Pressure-induced change in stoichiometry
C)Enhanced covalent bonding character✓
D)Decreased ion mobility within structure
💡 Explanation
Increased pressure forces the ions closer, promoting stronger interactions and charge-cloud overlap. This increases the covalency character because **electron density redistribution** effectively reduces formally ionic charges. Therefore, enhanced covalent bonding occurs rather than other structural changes under moderate pressure.
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