WhyCu2+ ion is paramagnetic while Zn2+ is diamagnetic?

1.	WhyCu2+ ion is paramagnetic while Zn2+ is diamagnetic?
Answer» s an unpaired electron (its configuration is [AR] 3d9), whereas Zn2+ has all PAIRED electrons (configuration [Ar] 3D10). PAIRING electrons leads to DIAMAGNETISM, and unpaired electrons leads to paramagnetism.

Discussion