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Which consequence results when molten NaCl solidifies unevenly?

A)Increased point defect concentrations appear
B)Covalent bond character becomes dominant
C)Grain boundary diffusion decreases sharply
D)Electron mobility increases significantly

💡 Explanation

Undirected cooling induces localized stress. Cation/anion vacancies increase via Frenkel Defect formation because minimized lattice energy drives point defect equilibrium to accommodate strain; therefore the concentration changes, rather than altered bonding or grain effects.

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