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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Solution

Dear student,
Copper is the brown coloured element X which on heating in air becomes black coloured compound copper oxide.
2Cu + O₂ →2CuO
Regards

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

Dear student, Copper is the brown coloured element X which on heating in air becomes black coloured compound copper oxide. 2Cu + O2 →2CuO Regards

Dear student,
Copper is the brown coloured element X which on heating in air becomes black coloured compound copper oxide.
2Cu + O₂ →2CuO
Regards