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प्रश्न
The appearance of colour in solid alkali metal halides is generally due to
विकल्प
Schottky defect
Frenkel defect
Interstitial positions
F-centre
MCQ
उत्तर
F-centre
Explanation:
The presence of an F-centre found as a defect in the crystal structure causes the appearance of colour in solid alkali metal halide.
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