Question

Example 6:
What is the valency of Cu in CuO and Cu,O?
Solution:​

Answer 1

Answer:

Explanation:

for copper its 1 in cuo here oxygen have only one valency peroxo kind u know

and yes cu do have 1 because of 3d10 4s1

but oxygen have 2 becz 2p4

Answer 2

Hii...

=> It is a transition metal with variable valency. As d orbital electrons are tightly bound, so copper has variable valency. IN CASE OF CUO: Cupric Oxide or Copper (II) oxide. Copper valency is 2.