Question

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

Answer 1

Answer:

the element is copper and on heating it forms cuo copper oxide which is black.

Answer 2

Answer:

copper oxide

Copper is the brown coloured element X which on heating in air becomes black coloured compound copper oxide

Explanation: