Electronic configuration of $[C u (N H_{3})_{6}]^{2 +}$ on the basis of crystal field splitting theory is :

t_{2 g}^{4} e_{g}^{5}

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t_{2 g}^{6} e_{g}^{3}

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t_{2 g}^{9} e_{g}^{0}

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t_{2 g}^{5} e_{g}^{4}

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Solution

The correct option is B $t_{2 g}^{6} e_{g}^{3}$
In $[C u (N H_{3})_{6}]^{2 +}$ , oxidation state of $C u$ ia $+ 2$ ,
The outer electronic configuration of $C u^{2 +} = 3 d^{9}$
$N H_{3}$ is a weak field ligand.
For $3 d^{9}$ configuration, 6 electron are present in lower $t_{2 g}$ energy level and 3 electrons are present in higher $e_{g}$ energy level. Thus configuration will be $t_{2 g}^{6} e_{g}^{3} .$

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Similar questions

Q. Give the electronic configuration of the following on the basis of crystal field splitting theory.

{[C o F_{6}]}^{3 -}

and

{[C u {({N H}_{3})}_{6}]}^{2 +}

Give the electronic configuration of the following complexes on the basis of crystal field splitting theory. $[C o F_{6}]^{3 -}, [F e (C N)_{6}]^{4 -}$ and $[C u (N H_{3})_{6}]^{2 +} .$

Q. What is meant by crystal field splitting energy ? On the basis of crystal field theory, write the electronic configuration of

d^{4}

in terms of

t_{2 g}

and

e_{g}

in an octahedral field when
(i)

Δ_{0} > P

(ii)

Δ_{0} < P

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

K_{4} [F e (C N)_{6}]

based on crystal field theory?

(i) Draw the geometrical isomers of complex $[C o (e n)_{2} C l_{2}]^{+}$ .

(ii) On the basis of crystal field theory, write the electronic configuration for d⁴ ion if $Δ_{0} > P$ .

(iii) $[N i C l_{4}]^{2 -}$ is paramagnetic, while $[N i (C O)_{4}]$ is diamagnetic, though both are tetrahedral. Why? (Atomic number of Ni = 28)

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Electronic configuration of [Cu(NH3)6]2+ on the basis of crystal field splitting theory is :

Electronic configuration of $[C u (N H_{3})_{6}]^{2 +}$ on the basis of crystal field splitting theory is :