The crystal fied stabilization energy (CFSE) of [Fe(H2O)6]Cl2 and K2[NiCl4], respectively, are :-

Question

The crystal fied stabilization energy (CFSE) of [Fe(H2O)6]Cl2 and K2[NiCl4], respectively, are :- (A) -0.4 ΔO and -0.8 Δ t (B) -0.4 ΔO and -1.2 Δ t (C) -2.4 ΔO and -1.2Δ t (D) -0.6 ΔO and -0.8 Δ t

Tardigrade Admin · Accepted Answer

[ Fe ( H 2 O )6] Cl 2, Fe 2+ longrightarrow 3 d 6 arrow( t 2 g )4( e g )2 C ⋅ F ⋅ S ⋅ E ⋅ 4 ×(-0 ⋅ 4 Δ o )+2 × 0 ⋅ 6 Do =-0 ⋅ 4 Δ o K 2[ NiCl 4], Ni 2+ arrow 3 d 8 arrow( e )4( t 2)4 C ⋅ F ⋅ S ⋅ E ⋅=4 ×(-0 ⋅ 6 Δ t )+4 ×(0 ⋅ 4 Δ t )=-0 ⋅ 8 Δ t

Q. The crystal fied stabilization energy (CFSE) of $[F e (H_{2} O)_{6}] C l_{2}$ and $K_{2} [N i C l_{4}]$ , respectively, are :-

$- 0.4 Δ_{O}$ and $- 0.8Δ t$

$- 0.4 Δ_{O}$ and $- 1.2Δ t$

$- 2.4 Δ_{O}$ and $- 1.2Δ t$

$- 0.6 Δ_{O}$ and $- 0.8Δ t$

Q. The crystal fied stabilization energy (CFSE) of [Fe(H2​O)6​]Cl2​ and K2​[NiCl4​], respectively, are :-

−0.4ΔO​ and −0.8Δt

−0.4ΔO​ and −1.2Δt

−2.4ΔO​ and −1.2Δt

−0.6ΔO​ and −0.8Δt

[Fe(H2​O)6​]Cl2​,Fe2+⟶3d6​→(t2g​)4​(eg​)2 C⋅F⋅S⋅E⋅4×(−0⋅4Δo)+2×0⋅6Do=−0⋅4Δo K2​[NiCl4​],Ni2+→3d8​→(e)4(t2​)4 C⋅F⋅S⋅E⋅=4×(−0⋅6Δt)+4×(0⋅4Δt)=−0⋅8Δt

Q. The crystal fied stabilization energy (CFSE) of $[F e (H_{2} O)_{6}] C l_{2}$ and $K_{2} [N i C l_{4}]$ , respectively, are :-

$- 0.4 Δ_{O}$ and $- 0.8Δ t$

$- 0.4 Δ_{O}$ and $- 1.2Δ t$

$- 2.4 Δ_{O}$ and $- 1.2Δ t$

$- 0.6 Δ_{O}$ and $- 0.8Δ t$