InterviewSolution
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InterviewSolution
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why does white Zn0(s) becomes yellow upon heating ? |
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Answer» on heating ZnO loses oxygen as follows `ZnOoverset("heat")to Zn^(2+)+(1)/(2)O_(2)+2e^(-)` `Zn^(2+)` ions and electrons move to interstitial sites and F - centress are formed which imparat yellow colour to ZnO(S) . |
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