Which one of the following statements is corr | vedclass

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(A) In crystal field theory,the distribution of electrons in $d$-orbitals depends on the relative magnitude of crystal field splitting energy $(\Delta

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When $\Delta_0 > P$,low-spin complex forms

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(A) In crystal field theory,the distribution of electrons in $d$-orbitals depends on the relative magnitude of crystal field splitting energy $(\Delta_0)$ and pairing energy $(P)$.When $\Delta_0 > P$,the energy required to pair electrons is less than the energy required to promote an electron to the higher energy $e_g$ orbital.Therefore,electrons prefer to pair up in the $t_{2g}$ orbitals,resulting in the formation of low-spin complexes.Conversely,when $\Delta_0 < P$,electrons occupy the higher energy $e_g$ orbitals before pairing,resulting in high-spin complexes.

List-$I$	List-$II$
$P$. $t_{2g}^6 e_g^0$	$1$. $[Fe(H_2O)_6]^{2+}$
$Q$. $t_{2g}^3 e_g^2$	$2$. $[Mn(H_2O)_6]^{2+}$
$R$. $e^2 t_2^3$	$3$. $[Co(NH_3)_6]^{3+}$
$S$. $t_{2g}^4 e_g^2$	$4$. $[FeCl_4]^{-}$
	$5$. $[CoCl_4]^{2-}$

Which one of the following statements is correct for $d^4$ ions $(P = \text{pairing energy})$?

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