Which ion is not coloured?

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The colour of transition metal ions is due to the presence of unpaired electrons,which allow for $d-d$ transitions.$Cr^{3+}$ has $3$ unpaired elec

Vedclass · Accepted Answer

$Cu^{+}$

Vedclass · Answer

(D) The colour of transition metal ions is due to the presence of unpaired electrons,which allow for $d-d$ transitions.$Cr^{3+}$ has $3$ unpaired electrons $([Ar] 3d^3)$.$Co^{2+}$ has $3$ unpaired electrons $([Ar] 3d^7)$.$Cr^{2+}$ has $4$ unpaired electrons $([Ar] 3d^4)$.$Cu^{+}$ has the electronic configuration $[Ar] 3d^{10}$,meaning it has no unpaired electrons.Therefore,$Cu^{+}$ is colourless.

Similar Questions

Four successive members of the first row transition elements are listed below with their atomic numbers. Which one of them is expected to have the highest $E^{o}_{M^{3+} / M^{2+}}$ value?

The transition metal with the highest melting point is:

Where are the transition elements and inner transition elements located in the periodic table?

Which elements were named by the following?
$(i)$ Lawrence Berkeley Laboratory
$(ii)$ Seaborg's group

Which element from the following exhibits a common oxidation state of $+2$ only?

Vedclass Test Series

Exam Paper Generator

Online Exam Module