Cu2t is coloured and paramagnetic while Zn2+ ion is3colourless and dia

1.	Cu2t is coloured and paramagnetic while Zn2+ ion is3colourless and diamagnetic.
Answer» Cu2+has an unpaired electron (its configuration is [Ar] 3d9),whereas Zn2+has all paired electrons (configuration [Ar] 3d10). Also, the unpaired electron in the copper ion allows electron transition in the visible region to take place, so the ion iscoloured.

Cu2t is coloured and paramagnetic while Zn2+ ion is3colourless and diamagnetic.

Answer»

Cu2+has an unpaired electron (its configuration is [Ar] 3d9),whereas Zn2+has all paired electrons (configuration [Ar] 3d10).

Also, the unpaired electron in the copper ion allows electron transition in the visible region to take place, so the ion iscoloured.