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(C) Let us calculate the number of unpaired electrons for each complex:$1$. $[FeF_6]^{3-}$: $Fe^{3+}$ is $3d^5$. $F^-$ is a weak field ligand,so elect

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$[Co(NH_3)_6]^{3+} - 4$

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(C) Let us calculate the number of unpaired electrons for each complex:$1$. $[FeF_6]^{3-}$: $Fe^{3+}$ is $3d^5$. $F^-$ is a weak field ligand,so electrons remain unpaired. $n = 5$. (Correct)$2$. $[Cr(en)_3]^{2+}$: $Cr^{2+}$ is $3d^4$. $en$ is a strong field ligand,so electrons pair up. $t_{2g}^4 e_g^0$ gives $n = 2$. (Correct)$3$. $[Co(NH_3)_6]^{3+}$: $Co^{3+}$ is $3d^6$. $NH_3$ is a strong field ligand,so all electrons pair up in $t_{2g}$ orbitals. $n = 0$. (Incorrect,given as $4$)$4$. $[Mn(H_2O)_6]^{2+}$: $Mn^{2+}$ is $3d^5$. $H_2O$ is a weak field ligand,so $n = 5$. (Correct)

Which of the following is incorrectly matched?
Complex $-$ Number of unpaired electrons

Similar Questions

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Which of the following is incorrectly matched?Complex $-$ Number of unpaired electrons