Question

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

Answer 1

Answer:

the element is copper and the black substance formed is copper oxide, it is formed when copper is heated

Answer 2

Answer:

HEY MATE

YOUR ANSWER IS HERE .....

THE ELEMENT X IS COPPER

AND BLACK COLOUR SUBSTANCE IS COPPER OXIDE......

Cu AND CuO ..........

hope it helps ....

and sorry for my reaction but now iam ok

iam sorry for you and now onwards I will never talk to her or follow her until unless you are upset.......

sorry again but I was very sad at that time ...