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प्रश्न
Which of the following crystal will show metal excess defect due to extra cation?
पर्याय
\[\ce{AgCl}\]
\[\ce{NaCl}\]
\[\ce{FeO}\]
\[\ce{ZnO}\]
MCQ
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उत्तर
\[\ce{ZnO}\]
Explanation:
\[\ce{ZnO}\] shows a metal excess defect due to extra cations. When heated, zinc oxide loses oxygen, leaving behind extra zinc ions \[\ce{(Zn^2+)}\] that occupy interstitial positions. The electrons released during this process balance the charge, resulting in a metal excess defect.
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