Question

1000 points
A shiny brown coloured element X on heating in air becomes black in color.
Name the element X and the black color compound formed.

Answer 1

Heyaaa

Answer

Name of element is copper

Black compound is copper oxide

I hope it will help u

Answer 2

Hola!

The element X is Copper (Cu). Because it is a browm coloured element and on heating becomes black.

When it reacts in air then it means it reacts with Oxygen.

So the equation will be -

2Cu + O^2 ==> 2CuO.

$<marquee>Thank you$