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A shiny brown coloured element ‘X’ on he...

A shiny brown coloured element ‘X’ on heating in air becomes black in colour. Name the element ‘X’ and the black coloured compound formed

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The element 'X' is copper and the black coloured compound is copper (II) oxide also known as cupric oxide.
`2underset((X))(Cu) + O_(2) overset("heat")to 2underset((Black))(CuO)`
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DINESH PUBLICATION-CHEMICAL REACTIONS AND EQUATIONS -N.C.E.R.T. End Exercise
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