Question

What is the magnetic behaviour of cu⁺ ion?

Answer 1

1. Cu⁺ ion has electronic configuration [Ar] 3d¹⁰, i.e., the 3d orbitals are completely filled.
2. There are no unpaired electrons in Cu⁺ ion.
3. Due to the absence of unpaired electrons, Cu⁺ ion is diamagnetic.
4. Diamagnetism means it is weakly repelled by a magnetic field.

Hence, Cu⁺ ion exhibits diamagnetic behavior because all its electrons are paired.