Which of the following compounds is expected | vedclass

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(B) compound is coloured if it contains transition metal ions with partially filled $d$-orbitals (i.e.,unpaired electrons) due to $d-d$ transitions.$A

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$CuF_2$

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(B) compound is coloured if it contains transition metal ions with partially filled $d$-orbitals (i.e.,unpaired electrons) due to $d-d$ transitions.$Ag_2SO_4$ contains $Ag^+$ $(4d^{10})$,which has no unpaired electrons,making it colourless.$CuF_2$ contains $Cu^{2+}$ $(3d^9)$,which has $1$ unpaired electron,making it coloured.$MgF_2$ contains $Mg^{2+}$ $(2p^6)$,which has no unpaired electrons,making it colourless.$CuCl$ contains $Cu^+$ $(3d^{10})$,which has no unpaired electrons,making it colourless.Therefore,the correct option is $B$.

Which of the following compounds is expected to be coloured?

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