Which of the following complexes has maximum | vedclass

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

Question

(D) The $CFSE$ (Crystal Field Stabilization Energy) depends on the oxidation state of the metal,the nature of the ligand,and the $d$-electron configur

Vedclass · Accepted Answer

$K_{3}[Co(CN)_{6}]$

Vedclass · Answer

(D) The $CFSE$ (Crystal Field Stabilization Energy) depends on the oxidation state of the metal,the nature of the ligand,and the $d$-electron configuration.$1$. In $K_{3}[Fe(CN)_{6}]$,$Fe$ is in $+3$ oxidation state ($d^{5}$ configuration). $CN^{-}$ is a strong field ligand,resulting in a low-spin $t_{2g}^{5}e_{g}^{0}$ configuration. $CFSE = -2.0 \Delta_{o}$.$2$. In $K_{3}[Co(Ox)_{3}]$,$Co$ is in $+3$ oxidation state ($d^{6}$ configuration). $Ox^{2-}$ is a moderate field ligand,resulting in a low-spin $t_{2g}^{6}e_{g}^{0}$ configuration. $CFSE = -2.4 \Delta_{o}$.$3$. In $K_{3}[CoF_{6}]$,$Co$ is in $+3$ oxidation state ($d^{6}$ configuration). $F^{-}$ is a weak field ligand,resulting in a high-spin $t_{2g}^{4}e_{g}^{2}$ configuration. $CFSE = -0.4 \Delta_{o}$.$4$. In $K_{3}[Co(CN)_{6}]$,$Co$ is in $+3$ oxidation state ($d^{6}$ configuration). $CN^{-}$ is a strong field ligand,resulting in a low-spin $t_{2g}^{6}e_{g}^{0}$ configuration. $CFSE = -2.4 \Delta_{o}$.Comparing the magnitudes,$[Co(CN)_{6}]^{3-}$ and $[Co(Ox)_{3}]^{3-}$ have the highest $CFSE$ values. However,since $CN^{-}$ is a stronger field ligand than $Ox^{2-}$,$\Delta_{o}$ for $[Co(CN)_{6}]^{3-}$ is significantly larger,making its $CFSE$ the maximum.

Which of the following complexes has maximum $CFSE$?

Similar Questions

$CuSO_4 \cdot 5 H_2O$ is blue in colour while $CuSO_4$ is colourless. Why?

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.

Crystal field stabilization energy $(CFSE)$ for the complex $[Co(CN)_6]^{3-}$ will be:

Absorbed colour of the solutions of the following complexes $[M(NH_3)_6]^{2+}$,$[M(H_2O)_6]^{2+}$ and $[MCl_4]^{2-}$ are respectively (having the same metal ion):

Two complexes $[Cr(H_2O)_6]Cl_3 \ (A)$ and $[Cr(NH_3)_6]Cl_3 \ (B)$ are violet and yellow coloured respectively. The incorrect statement regarding them is

Vedclass Test Series

Exam Paper Generator

Online Exam Module