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← ScienceWhich risk increases during LiF crystal formation when lithium exceeds fluorine?
A)Increased F-center defect concentration✓
B)Enhanced Frenkel defect formation
C)Reduced Schottky defect population
D)Suppressed electron-hole recombination
💡 Explanation
Higher lithium availability promotes excess electrons trapped at fluorine vacancies, because charge neutrality requires formation of these anion vacancies (F-centers) via Schottky defect mechanism. Therefore the color becomes more intense, rather than inducing other point defects.
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