Cuprous ion is colourless,while cupric ion is | vedclass

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(B) The electronic configuration of $Cu^{+}$ is $[Ar] 3d^{10}$. Since the $d$-orbital is completely filled,there are no unpaired electrons available f

Vedclass · Accepted Answer

Cuprous ion has a completed $d$-orbital and cupric ion has an incomplete $d$-orbital

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(B) The electronic configuration of $Cu^{+}$ is $[Ar] 3d^{10}$. Since the $d$-orbital is completely filled,there are no unpaired electrons available for $d-d$ transition,making it colourless.The electronic configuration of $Cu^{2+}$ is $[Ar] 3d^{9}$. It has one unpaired electron in the $d$-orbital,which allows for $d-d$ transition,making it coloured.

Cuprous ion is colourless,while cupric ion is coloured because

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