MCQ
The stabilization of coordination compounds due to chelation is called the chelate effect. Which of the following is the most stable complex species ?
- A$[Fe(CO)_5]$
- ✓$[Fe(CN)_6]^{-3}$
- C$[Fe(C_2O_4)_3]^{-3}$
- D$[Fe(H_2O)_6]^{+3}$
✓
Answer
Correct option: B.
$[Fe(CN)_6]^{-3}$
b
Chelation (formation of cycle by linkage between metal ion and ligand) stabilizes the coordination compound. The ligand which chelates the metal ion are known as chelating ligand. Here, only $\left[F e\left(C_{2} O_{4}\right)_{3}\right]^{3}$ is a coordination compound which contains oxalate ion as a chelating ligand. Hence, it stabilizes coordination compound by chelating $F e^{3+}$ ion.
Chelation (formation of cycle by linkage between metal ion and ligand) stabilizes the coordination compound. The ligand which chelates the metal ion are known as chelating ligand. Here, only $\left[F e\left(C_{2} O_{4}\right)_{3}\right]^{3}$ is a coordination compound which contains oxalate ion as a chelating ligand. Hence, it stabilizes coordination compound by chelating $F e^{3+}$ ion.
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
$\begin{matrix}
\,\,\,Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{2}}-CH=CH-C{{H}_{2}}\xrightarrow{Zn\,(dust)}(A) \\
\end{matrix}$
→\,\,\,Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{2}}-CH=CH-C{{H}_{2}}\xrightarrow{Zn\,(dust)}(A) \\
\end{matrix}$
Above reaction is an example of $1,4$ -elimination. Predict the product.
Which of following do not react with $HN{O_2}$
→Bullet-proof steel alloy is prepared by using
Which of the following Grignard reagent can be prepared ?
When $FeCl_3$ reacts with $K_4[Fe(CN)_6]$ then which of the following compound is formed
→A solution containing $10 \mathrm{~g}$ of an electrolyte $\mathrm{AB}_2$ in $100 \mathrm{~g}$ of water boils at $100.52^{\circ} \mathrm{C}$. The degree of ionization of the electrolyte $(\alpha)$ is............ $\times 10^{-1}$.
→(nearest integer)
[Given : Molar mass of $\mathrm{AB}_2=200 \mathrm{~g} \mathrm{~mol}^{-1} \cdot \mathrm{K}_{\mathrm{b}}$
(molal boiling point elevation const. of water)
$=0.52 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$, boiling point of water $=100^{\circ} \mathrm{C}$;
$\mathrm{AB}_2$ ionises as $\left.\mathrm{AB}_2 \rightarrow \mathrm{A}^{2+}+2 \mathrm{~B}^{-}\right]$
What are $N$ and $M$ ?
→The unit of rate constant of second order reaction is usually expressed as
Which one of the following statements concerning lanthanides elements is false
Which of the following organic compounds will give a mixture of $1-$ chlorobutane and $2-$ chlorobutane on chlorination
→