In which of the following complex species,Del | vedclass

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(D) The magnetic moment is given by $\mu = \sqrt{n(n+2)} \ B.M.$,where $n$ is the number of unpaired electrons.Given $\mu = \sqrt{3} \ B.M.$,we have $

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$[Fe(CN)_6]^{3-}$

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(D) The magnetic moment is given by $\mu = \sqrt{n(n+2)} \ B.M.$,where $n$ is the number of unpaired electrons.Given $\mu = \sqrt{3} \ B.M.$,we have $\sqrt{n(n+2)} = \sqrt{3}$,which implies $n = 1$.For $\Delta_0 > P$,the complex must be a low-spin complex.Let's analyze the options:$A$: $[Co(H_2O)_4(NH_3)_2]^{3+}$: $Co^{3+}$ is $d^6$. With strong field ligands,it forms a low-spin complex with $t_{2g}^6 e_g^0$,so $n = 0$.$B$: $[RhF_6]^{3-}$: $Rh^{3+}$ is $4d^6$. $4d$ and $5d$ series elements always form low-spin complexes,but $F^-$ is a weak field ligand. However,$Rh^{3+}$ is $d^6$,so $t_{2g}^6 e_g^0$,$n = 0$.$C$: $[Cr(CO)_6]$: $Cr^0$ is $d^6$. $CO$ is a strong field ligand,forming a low-spin complex with $t_{2g}^6 e_g^0$,$n = 0$.$D$: $[Fe(CN)_6]^{3-}$: $Fe^{3+}$ is $d^5$. $CN^-$ is a strong field ligand,forcing pairing. The configuration is $t_{2g}^5 e_g^0$,resulting in $n = 1$ unpaired electron. Thus,$\mu = \sqrt{1(1+2)} = \sqrt{3} \ B.M.$ and $\Delta_0 > P$.

Compound	Total stereoisomers
$A$. $[Co(en)_2Cl_2]^+$	$P$. $2$
$B$. $[Co(en)_3]Cl_3$	$Q$. $3$
$C$. $[Pt(NH_3)_2Cl_2]$	$R$. $4$
$D$. $[Pt(NH_3)_3Cl_3]^+$	$S$. $5$

In which of the following complex species,$\Delta_0 > P$ (pairing energy) with magnetic moment $\sqrt{3} \ B.M.$?

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Which among the following elements in their respective oxidation states develops the lowest spin-only magnetic moment? (Atomic numbers: $Cu=29, Fe=26, Ni=28, Co=27$)

Which of the following pairs has the same magnetic moment?

The highest value of the calculated spin-only magnetic moment (in $BM$) among all the transition metal complexes is

There are four complexes of $Ni$. Select the complex(es) which will be attracted by a magnetic field:
$(I) \ [Ni(CN)_4]^{2-}, \ (II) \ [NiCl_4]^{2-}, \ (III) \ [Ni(CO)_4]$
$(IV) \ [Ni(H_2O)_6]^{2+}$

Compound Total stereoisomers
$A$. $[Co(en)_2Cl_2]^+$ $P$. $2$
$B$. $[Co(en)_3]Cl_3$ $Q$. $3$
$C$. $[Pt(NH_3)_2Cl_2]$ $R$. $4$
$D$. $[Pt(NH_3)_3Cl_3]^+$ $S$. $5$

Match the compounds with their total number of stereoisomers and select the correct code:

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