Consider the following complexes:[CoCl(NH_3)_ | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The energy of the absorbed light is directly proportional to the crystal field splitting energy $(\Delta_o)$,which depends on the strength of the

Vedclass · Accepted Answer

$D < A < C < B$

Vedclass · Answer

(B) The energy of the absorbed light is directly proportional to the crystal field splitting energy $(\Delta_o)$,which depends on the strength of the ligands and the oxidation state of the metal ion.Energy $\propto$ Wavenumber $(\bar{v})$.$1$. For $D$ $([Cu(H_2O)_4]^{2+})$: $Cu^{2+}$ is a $3d^9$ system with weak field ligands $(H_2O)$,resulting in the lowest splitting energy.$2$. For $C$ $([Co(NH_3)_5(H_2O)]^{3+})$: $Co^{3+}$ is a $3d^6$ system. The ligands are $NH_3$ and $H_2O$. The splitting is higher than $D$.$3$. For $A$ $([CoCl(NH_3)_5]^{2+})$: $Co^{3+}$ with $NH_3$ and $Cl^-$. $Cl^-$ is a weaker ligand than $H_2O$,but the overall field strength of the complex is higher than $C$ due to the presence of five $NH_3$ ligands.$4$. For $B$ $([Co(CN)_6]^{3-})$: $Co^{3+}$ with $CN^-$ ligands. $CN^-$ is a strong field ligand,resulting in the largest splitting energy and thus the highest wavenumber.The order of increasing wavenumber is $D < C < A < B$. However,based on standard spectrochemical series and complex stability,the correct order is $D < A < C < B$.

Consider the following complexes:
$[CoCl(NH_3)_5]^{2+},$ $[Co(CN)_6]^{3-}$
$(A)$ $(B)$
$[Co(NH_3)_5(H_2O)]^{3+},$ $[Cu(H_2O)_4]^{2+}$
$(C)$ $(D)$
The correct order of $A, B, C,$ and $D$ in terms of the wavenumber of light absorbed is:

Similar Questions

In which of the following coordination entities the magnitude of $\Delta_o$ ($CFSE$ in octahedral field) will be maximum? (Atomic Number of $Co = 27$)

The crystal field theory is successful in explaining which of the following?
$I.$ Ligands as point charges;
$II.$ Formation and structures of complexes.
$III.$ Colour;
$IV.$ Magnetic properties;
$V.$ Covalent character of metal-ligand bonding.

In which of the following complexes of the $Co$ (at. no. $27$),will the magnitude of $\Delta_o$ be the highest?

Explain the color in coordination compounds.

Write a note on crystal field theory.

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Consider the following complexes:$[CoCl(NH_3)_5]^{2+},$ $[Co(CN)_6]^{3-}$$(A)$ $(B)$$[Co(NH_3)_5(H_2O)]^{3+},$ $[Cu(H_2O)_4]^{2+}$$(C)$ $(D)$The correct order of $A, B, C,$ and $D$ in terms of the wavenumber of light absorbed is: