Question

a shiny brown colored element x on heating in air becomes black in color .name the element x and the black colored compound formed.

Answer 1

Explanation:

the correct answer is copper when copper is burn it turns it colours black

Answer 2

Answer:

The element x must be copper because copper is ashiny brown coloured element which on heating in air combine with o2 of the air to form black copper oxide...

2cu+02----heat---> 2cuo