The yellow colour of ZnO and conducting nature produced on heating is due to 

Options

A. Metal excess defects due to interstitial cation
B. Extra positive ions present in interstitial site
C. Trapped electrons
D. None of these

Answer

A, B, C

Explanation

`ZnO`-metal excess defect due to intersectional cation. The excess `Zn^(-12)` ions thus trapped in to the vavant interstilial sites while electrons are trapped in neighbouring interstitial sites increases the conductivity of ZnO and turns yellow.