Question

Cu have electronic configuration [Ar]₁₈ 3d¹⁰ 4s¹, instead of [Ar]₁₈ 3d⁹ 4s². The probable reason for that

Answer 1

Answer:

Configuration either exactly half-filled or fully filled orbitals are more stable due to symmetrical distribution of electrons and maximum exchange energy in

d-orbitals are completely filled and s-orbital is half-filled. Hence it is more stable configuration.