Which of the following complexes will absorb | vedclass

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(C) The wavelength of light absorbed $(\lambda)$ is inversely proportional to the crystal field splitting energy $(\Delta_o)$.
$\lambda \propto \frac

Vedclass · Accepted Answer

$[CoCl(NH_3)_5]^{2+}$

Vedclass · Answer

(C) The wavelength of light absorbed $(\lambda)$ is inversely proportional to the crystal field splitting energy $(\Delta_o)$.
$\lambda \propto \frac{1}{\Delta_o}$.
To absorb the maximum wavelength,the complex must have the minimum crystal field splitting energy $(\Delta_o)$.
According to the spectrochemical series,the strength of ligands is: $CN^{-} > NH_3 > H_2O > Cl^{-}$.
Among the given ligands,$Cl^{-}$ is the weakest ligand,which results in the smallest $\Delta_o$ value.
Therefore,the complex $[CoCl(NH_3)_5]^{2+}$ will have the minimum $\Delta_o$ and will absorb the maximum wavelength of light.

Which of the following complexes will absorb the maximum wavelength of light?

Similar Questions

Arrange the following in increasing order of their crystal field splitting energy:
$I. [Co(H_2O)_6]^{3+}$
$II. [Co(NH_3)_6]^{3+}$
$III. [Co(CN)_6]^{3-}$
$IV. [CoF_6]^{3-}$

The correct order of ligands arranged in increasing field strength.

The number of unpaired $d$-electrons in $[Co(H_2O)_6]^{3+}$ is $\qquad$

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.

The correct sequence of ligands in the order of decreasing field strength is:

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