Which of the following ions gives a coloured | vedclass

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Question

(D) The correct answer is $(D)$.An ion forms a coloured solution if it contains unpaired electrons in its $d$-orbitals.$Cu^{+}$ $(3d^{10})$ has $0$ un

Vedclass · Accepted Answer

$Fe^{2+}$

Vedclass · Answer

(D) The correct answer is $(D)$.An ion forms a coloured solution if it contains unpaired electrons in its $d$-orbitals.$Cu^{+}$ $(3d^{10})$ has $0$ unpaired electrons.$Zn^{2+}$ $(3d^{10})$ has $0$ unpaired electrons.$Ag^{+}$ $(4d^{10})$ has $0$ unpaired electrons.$Fe^{2+}$ $(3d^{6})$ has $4$ unpaired electrons,which allows for $d-d$ transitions,resulting in a coloured solution.

Which of the following ions gives a coloured solution?

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