why Zno appears yellow on heating.

Asked by  | 19th Sep, 2008, 12:45: AM

Expert Answer:

Zno looses oxygen on heating and vacant sites of anions are occupied by electrons which abosrb light from visible light and radiate complementary color i.e yellow.

Answered by  | 19th Sep, 2008, 08:13: AM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.