Which of the following ions is coloured?

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Question

(B) The colour of transition metal ions is due to the presence of unpaired electrons,which allow for $d-d$ transitions.$Cu^{+}$ $(3d^{10})$: No unpair

Vedclass · Accepted Answer

$Cu^{2+}$

Vedclass · Answer

(B) The colour of transition metal ions is due to the presence of unpaired electrons,which allow for $d-d$ transitions.$Cu^{+}$ $(3d^{10})$: No unpaired electrons,so it is colourless.$Cu^{2+}$ $(3d^9)$: Has $1$ unpaired electron,so it is coloured.$Ti^{4+}$ $(3d^0)$: No unpaired electrons,so it is colourless.$V^{5+}$ $(3d^0)$: No unpaired electrons,so it is colourless.Therefore,the correct option is $(B)$.

List-$I$ Species	List-$II$ Electronic distribution
$A$. $Cr^{2+}$	$I$. $3d^8$
$B$. $Mn^{+}$	$II$. $3d^3 4s^1$
$C$. $Ni^{2+}$	$III$. $3d^4$
$D$. $V^{+}$	$IV$. $3d^5 4s^1$

Similar Questions

Silver atom has completely filled $d$ orbitals $\left(4d^{10}\right)$ in its ground state. How can you say that it is a transition element?

Match List-$I$ with List-$II$

List-$I$ Species List-$II$ Electronic distribution

$A$. $Cr^{2+}$ $I$. $3d^8$

$B$. $Mn^{+}$ $II$. $3d^3 4s^1$

$C$. $Ni^{2+}$ $III$. $3d^4$

$D$. $V^{+}$ $IV$. $3d^5 4s^1$

Choose the correct answer from the options given below:

Identify the ferromagnetic element from the following.

Which among the following cations will not form coloured compounds? (Atomic number $Cu=29, Ti=22, V=23, Mn=25$)

Which among the following properties is $\underline{NOT}$ exhibited by transition elements?

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