Question

a shiny brown coloured element "x" on heating in air becomes back in colour .name element "x" and the black coloured compound formed?.​

Answer 1

Answer:

Please refer to the picture.

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Answer 2

Answer:the element X is Copper(Cu) and the black compound is Copper oxide( CuO)

Explanation:Shiny brown element is Copper and when heated in air ,it reacts with the Oxygen in air to form it's oxide...

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