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Why ZnO appear yellow on heating??

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Why ZnO appear yellow on heating??

Posted by Nisha Yadav 5 years, 6 months ago

CBSE > Class 12 > Chemistry

3 answers

Priyanshi Sojitra 5 years, 6 months ago

Due to f centre

Khushi....? ??‍? 5 years, 6 months ago

Zinc oxide is white in color but on heating, it turns into yellowbecause it loses oxygen reversibly at high temperature.

Vikas Shukla 5 years, 6 months ago

In ZnO , Zn2+ ions occupy interstitial sites. Electrons are trapped in interstitial sites as well to maintain the electrical neutrality. Zinc oxide is white in colour but on high temperature it loses oxygen reversibly and turns yellow in colour.

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