MCQ
Which of the following complex ions is not expected to absorb visible light?
- ✓$[Ni(CN)_4]^{2-}$
- B$[Cr(NH_3)_6]^{3+}$
- C$[Fe(H_2O)_6]^{2+}$
- D$[Ni(H_2O)_6]^{2+}$
✓
Answer
Correct option: A.
$[Ni(CN)_4]^{2-}$
a
A transition metal complex absorbs visible tight only if it has unpaired electrons.
A transition metal complex absorbs visible tight only if it has unpaired electrons.
No unpaired electron so does not absorb visible light.
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 one of the following compounds on strong heating evolves ammonia gas?
On mixing $10\ mL$ of acetone with $40\ mL$ of chloroform , the total volume of the solution is
→Zeigler - Natta catalyst is used for which type of reaction
Phenol $\mathop {\xrightarrow{{(i)\,NaOH}}}\limits_{(ii)\,C{O_2}/140\,^oC} A\xrightarrow{{{H^ + }/{H_2}O}} $ $B\mathop {\xrightarrow{{A{l_2}{O_3}}}}\limits_{C{H_3}COOH,\,\Delta } C$
→In this reaction, the end product $C$ is :
How many total oximes are possible for ketons having molecular formula $C_3H_6O$,$C_4H_8O$ and $C_5H_{10}O$
→(image) $\xrightarrow{{NO_2^ \oplus }}$ Product is
→The end product in the reaction :-
Consider the given reaction, the product $'X^{\prime}$ is:
→Product ; The Product is
At $298\, K$ the $emf$ of cell is .......... $\mathrm{V}$
→$\operatorname{P} t|{H_{{2_{\left( {2\,atm} \right)}}}}|H_{\left( {0.002\,M} \right)}^ \oplus ||H_{\left( {0.1\,M} \right)}^ \oplus |{H_{{2_{\left( {1\,atm} \right)}}}}|Pt$