સૂચિ$I$ સાથે સૂચિ$II$ ને જોડો.

સૂચિ$I$ સંકીર્ણ સૂચિ$II$ સ્ફટિક ક્ષેત્ર વિભાજન ઊર્જા $\left(\Delta_0\right)$

$A$ $\left[ Ti \left( H _2 O \right)_6\right]^{2+}$ $I$ $-1.2$

$B$ $\left[ V \left( H _2 O \right)_6\right]^{2+}$ $II$ $-0.6$

$C$ $\left[ Mn \left( H _2 O \right)_6\right]^{3+}$ $III$ $0$

$D$ $\left[ Fe \left( H _2 O \right)_6\right]^{3+}$ $IV$ $-0.8$

Question

સૂચિ$I$ સાથે સૂચિ$II$ ને જોડો.

સૂચિ$I$ સંકીર્ણ	સૂચિ$II$ સ્ફટિક ક્ષેત્ર વિભાજન ઊર્જા $\left(\Delta_0\right)$
$A$ $\left[ Ti \left( H _2 O \right)_6\right]^{2+}$	$I$ $-1.2$
$B$ $\left[ V \left( H _2 O \right)_6\right]^{2+}$	$II$ $-0.6$
$C$ $\left[ Mn \left( H _2 O \right)_6\right]^{3+}$	$III$ $0$
$D$ $\left[ Fe \left( H _2 O \right)_6\right]^{3+}$	$IV$ $-0.8$

JEE MAIN 2023, Diffcult

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Solution

b
(A) ${\left[ Ti \left( H _2 O \right)_6\right]^{2+}}$

$Ti ^{2+} \Rightarrow 3 d ^2 4 s ^0$

$t _{2 g } e ^{-}=2$

$e _{ g } e ^{-}=0$

$CFSE =[-0.4 \times 2+0.6 \times 0] \Delta_0$

$-0.8\,\Delta$

(B) ${\left[ V \left( H _2 O \right)_6\right]^{2+}}$

$V ^{2+} \Rightarrow 3 d ^3 4 s ^0$

$t _{2 g } e ^{-}=3$

$e _{ g } e ^{-}=0$

$CFSE =[-0.4 \times 3+0.6 \times 0] \Delta_0$

$-1.2 \Delta_0$

(C) ${\left[ Mn \left( H _2 O \right)_6\right]^{3+}}$

$Mn ^{3+} \Rightarrow 3 d ^4 4 s ^0$

$t _{2 g } e ^{-}=3$

$e _{ g } e ^{-}=1$

$CFSE =[-0.4 \times 3+0.6 \times 1] \Delta_0$

$=-0.6 \Delta_0$

(D) ${\left[ Fe \left( H _2 O \right)_6\right]^{3+}}$

$Fe ^{3+} \Rightarrow 3 d ^5 4 s ^0$

$t _{2 g } e ^{-}=3 \quad e _{ g }=2$

$CFSE =[-0.4 \times 3+0.6 \times 2] \Delta_0$

$=0 \Delta_0$

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