What is the correct electronic configuration of the central atom in...

What is the correct electronic configuration of the central atom in

{K}_{4}

\left[Fe{

\left(CN\right)}_{6}\right]

based on crystal field theroy? What is the correct electronic configuration of the central atom in K _ 4 [Fe (CN) _ 6 ] based on crystal field theroy?

Options

A ${t}_{2g}^{4}{e}_{g}^{2}$
B ${t}_{2g}^{6}{e}_{g}^{0}$
C ${e}^{3}{t}_{2}^{3}$
D ${e}^{4}{t}_{2}^{2}$

Correct answer

B. ${t}_{2g}^{6}{e}_{g}^{0}$

Step-by-step solution

In the complex: ${K}_{4}\left[Fe{\left(CN\right)}_{6}\right]$ , $Fe$ exists as $F{e}^{2 +}$ .

Electronic configuration $= \left[Ar\right]3{d}^{6}$

What is the correct electronic configuration of the central atom in K _ 4 [Fe (CN) _ 6 ] based on crystal field theroy?

$∵ CN$ is a strong ligand, it will cause pairing up $\to$

What is the correct electronic configuration of the central atom in K _ 4 [Fe (CN) _ 6 ] based on crystal field theroy?

$∴$ Electronic configuration is ${t}_{2g}^{6}{e}_{g}^{0}$

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