MCQ
${[Sc{({H_2}O)_6}]^{3 + }}$ ion is
- ✓Colourless and diamagnetic
- BColoured and octahedral
- CColourless and paramagnetic
- DColoured and paramagnetic
✓
Answer
Correct option: A.
Colourless and diamagnetic
a
(a)$_{21}Sc = [Ar]\;3{d^1}4{s^2}$
(a)$_{21}Sc = [Ar]\;3{d^1}4{s^2}$
$S{c^{3 + }} = [Ar]\;3{d^0}4{s^0}$ no unpaired electrons in $d$ sub shell, so it is diamagnetic and colourless.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Which of the following contains asymmetric centre
Among $K{O_2},\,AlO_2^ - ,\,Ba{O_2}$ and $NO_2^ + $ unpaired electron is present in
→If equilibrium constant of a reaction is $20.0,$ at equilibrium, rate constant of forward reaction is $10.0,$ then rate constant for backward reaction is
→Consider the following route of reactions ${R_2}SiC{l_2} + Warer \to \left( A \right)\xrightarrow{{Polymarisation}}\left( B \right)$
→Compound $(B)$ in above reaction is
Which is low spin complex?
The maximum number of $90^o $ angles between bond pair-bond pair of electrons is observed in
→For the reaction $PC{l_5}_{(g)}$ $\rightleftharpoons$ $PC{l_3}_{(g)} + C{l_2}_{(g)}$
→The electron in the $n ^{\text {th }}$ orbit of $Li ^{2+}$ is excited to $(n+1)$ orbit using the radiation of energy $1.47 \times 10^{-17}\,J$ (as shown in the diagram). The value of $n$ is $....$.Given $R_H=2.18 \times 10^{-18}\,J$
→The alkene that exhibits geometrical isomerism is :
In the course of a chemical reaction an oxidant