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Zno is white in colour but …

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Zno is white in colour but upon heating becomes yellow

Posted by Akanksha Shristi 7 years, 5 months ago

CBSE > Class 12 > Chemistry

4 answers

Ritika Patil 7 years, 5 months ago

When Zno is heated it loses oxygen Tge Zn+2 ions are entrapped in the interstitial sites and electron are entrapped in the neighbouring interstitial sited to maintain electrical neutrility .results in metal excess defect ,due to presence of interstitial void the colour is yellow

Dipanshu Bokade 7 years, 5 months ago

Because it loses Oxygen atoms

Harsimran K 7 years, 5 months ago

Because it loses oxygen

Deepak Singh 7 years, 5 months ago

Due to Fcenter

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