KCET · Chemistry · Coordination Compounds
Formation of coloured solution is possible when metal ion in the compound contains
- A paired electrons
- B lone pair of electrons
- C unpaired electrons
- D none of the above
Answer & Solution
Correct Answer
(C) unpaired electrons
Step-by-step Solution
Detailed explanation
Formation of coloured solution is possible when metal ion in the. compound contains unpaired electrons. e.g.
\[
\begin{aligned}
&\mathrm{Cu}^{+}: 3 d^{10} 4 s^{0} \text { colourless } \\
&\mathrm{C} u^{2+}: 3 d^{9} 4 s^{0} \text { blue }
\end{aligned}
\]
\[
\begin{aligned}
&\mathrm{Cu}^{+}: 3 d^{10} 4 s^{0} \text { colourless } \\
&\mathrm{C} u^{2+}: 3 d^{9} 4 s^{0} \text { blue }
\end{aligned}
\]
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