Which of the following outer orbital complexe | vedclass

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(D) In an outer orbital octahedral complex,the ligands are weak field ligands,which means they do not cause pairing of electrons in the $d$-orbitals.F

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$d^5$ (octahedral)

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(D) In an outer orbital octahedral complex,the ligands are weak field ligands,which means they do not cause pairing of electrons in the $d$-orbitals.For a $d^4$ configuration: $t_{2g}^3 e_g^1$,number of unpaired electrons = $4$.For a $d^9$ configuration: $t_{2g}^6 e_g^3$,number of unpaired electrons = $1$.For a $d^7$ configuration: $t_{2g}^5 e_g^2$,number of unpaired electrons = $3$.For a $d^5$ configuration: $t_{2g}^3 e_g^2$,number of unpaired electrons = $5$.Comparing these,the $d^5$ configuration has the maximum number of unpaired electrons $(5)$.

List-$I$ (Complexes)	List-$II$ (Hybridisation)
$A$. $[Ni(CO)_4]$	$I$. $sp^3$
$B$. $[Cu(NH_3)_4]^{2+}$	$II$. $dsp^2$
$C$. $[Fe(NH_3)_6]^{2+}$	$III$. $sp^3d^2$
$D$. $[Fe(H_2O)_6]^{2+}$	$IV$. $d^2sp^3$

Which of the following outer orbital complexes has the maximum number of unpaired electrons?

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List-$I$ (Complexes) List-$II$ (Hybridisation)

$A$. $[Ni(CO)_4]$ $I$. $sp^3$

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