identify the black coloured element formed on reaction with oxygen

Asked by krittikac02 | 16th Jul, 2009, 08:09: PM

Expert Answer:

The element X is copper which is shiny brown in colour.

On heating in air  it becomes black cloured compound which is copper oxide (CuO)

2 Cu + O2 2 CuO


Answered by  | 17th Jul, 2009, 10:43: AM

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