Identify the correct statements from the following
A. $[Fe(C_2O_4)_3]^{3-}$ is the most stable complex among $[Fe(OH)_6]^{3-}$, $[Fe(C_2O_4)_3]^{3-}$ and $[Fe(SCN)_6]^{3-}$
B. The stability of $[Cu(NH_3)_4]^{2+}$ is greater than that of $[Cu(en)_2]^{2+}$
C. The hybridization of Fe in $K_4[Fe(CN)_6]$ is $d^2sp^3$
D. $[Fe(NO_2)_3Cl_3]^{3-}$ exhibits linkage isomerism
E. $NO_2^-$ and $SCN^-$ ligands are NOT ambidentate ligands
Choose the correct answer from the options given below :
A. $[Fe(C_2O_4)_3]^{3-}$ is the most stable complex among $[Fe(OH)_6]^{3-}$, $[Fe(C_2O_4)_3]^{3-}$ and $[Fe(SCN)_6]^{3-}$
B. The stability of $[Cu(NH_3)_4]^{2+}$ is greater than that of $[Cu(en)_2]^{2+}$
C. The hybridization of Fe in $K_4[Fe(CN)_6]$ is $d^2sp^3$
D. $[Fe(NO_2)_3Cl_3]^{3-}$ exhibits linkage isomerism
E. $NO_2^-$ and $SCN^-$ ligands are NOT ambidentate ligands
Choose the correct answer from the options given below :
- A, B, C, D and E
- B, C and D only
- A, C and D only
- A, C and E only
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
This question evaluates multiple concepts in coordination chemistry, including complex stability (chelate effect), hybridization (VBT/CFT), and types of isomerism/ligands.
Step 2: Detailed Explanation:
Statement A: Oxalate ($C_2O_4^{2-}$) is a chelating ligand, whereas $OH^-$ and $SCN^-$ are monodentate. Chelating complexes are significantly more stable than non-chelating ones due to the chelate effect. Thus, A is True.
Statement B: 'en' (ethylenediamine) is a bidentate chelating ligand, while $NH_3$ is monodentate. According to the chelate effect, $[Cu(en)_2]^{2+}$ is more stable than $[Cu(NH_3)_4]^{2+}$. Thus, B is False.
Statement C: In $K_4[Fe(CN)_6]$, iron is in the $+2$ oxidation state ($d^6$). $CN^-$ is a strong field ligand, causing electrons to pair up in the $t_{2g}$ orbitals. This leaves two empty $3d$ orbitals for hybridization. Thus, it undergoes $d^2sp^3$ hybridization. Thus, C is True.
Statement D: $NO_2^-$ is an ambidentate ligand (it can bind through N or O). Any complex containing an ambidentate ligand can exhibit linkage isomerism. Thus, D is True.
Statement E: $NO_2^-$ and $SCN^-$ are classic examples of ambidentate ligands because they have more than one potential donor atom. Thus, E is False.
Step 3: Final Answer:
Statements A, C, and D are correct.
Top JEE Main Chemistry Questions
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)- At equilibrium the concentrations of and in a sealed vessel at . What will be for the reaction
- Find out the major products from the following reactions
Cobalt chloride when dissolved in water forms pink colored complex $X$ which has octahedral geometry. This solution on treating with cone $HCl$ forms deep blue complex, $\underline{Y}$ which has a $\underline{Z}$ geometry $X, Y$ and $Z$, respectively, are
- The correct order of atomic radii is:
Top JEE Main Coordination chemistry Questions
- Match List I with List II:
List I (Substances) List II (Element Present) (A) Ziegler catalyst (I) Rhodium (B) Blood Pigment (II) Cobalt (C) Wilkinson catalyst (III) Iron (D) Vitamin B12 (IV) Titanium
Choose the correct answer from the options given below : - Given below are two statements:
Statement (I): A solution of \([Ni(H_2O)_6]^{2+}\) is green in color.
Statement (II): A solution of \([Ni(CN)_4]^{2-}\) is colorless.
In the light of the above statements, choose the most appropriate answer from the options given below. - Which of the following complex is homoleptic?
- Match List-I with List-II.
List-I
(Complex ion)List-II
(Spin only magnetic moment in B.M.)(A) [Cr(NH$_3$)$_6$]$^{3+}$ (I) 4.90 (B) [NiCl$_4$]$^{2-}$ (II) 3.87 (C) [CoF$_6$]$^{3-}$ (III) 0.0 (D) [Ni(CN)$_4$]$^{2-}$ (IV) 2.83
Choose the correct answer from the options given below: - Total number of unpaired electrons in the complex ion [Co(NH$_3$)$_6$]$^{3+}$ and [NiCl$_4$]$^{2-}$ is
Top JEE Main Questions
- In a hydrogen like atom, when an electron jumps from the $M$ - shell to the $L$ - shell, the wavelength of emitted radiation is $\lambda$. If an electron jumps from $N$-shell to the $L$-shell, the wavelength of emitted radiation will be :
- Two masses $m$ and $\frac{m}{2}$ are connected at the two ends of a massless rigid rod of length $l$. The rod is suspended by a thin wire of torsional constant $k$ at the centre of mass of the rod-mass system(see figure). Because of torsional constant $k$, the restoring torque is $\tau =k\theta$ for angular displacement $\theta$. If the rod is rota ted by $\theta_0$ and released, the tension in it when it passes through its mean position will be:
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)- The value of is
- The number of terms of an is even. The sum of the odd terms is and of the even terms is . The last term exceeds the first by . Then the number of terms in the series is ______.