Question

If copper is kept open in the air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of

(a) CuSO4

(b) CuCO3

(c) Cu(NO3 ) 2

(d) CuO

Answer 1

Answer:

the correct answer is b)CuCO3

Explanation:

pls mark me brainliest plz

Answer 2

Answer:

b is your fi al answer brainliest please