Identify the coordination complexes in which the central metal ion has $d^4$ configuration.
$(A)$ $[FeO_4]^{2-}$
$(B)$ $[Mn(CN)_6]^{3-}$
$(C)$ $[Fe(CN)_6]^{3-}$
$(D)$ $[Cr(H_2O)_6]^{2+}$
$(E)$ $[NiF_6]^{2-}$
Choose the correct answer from the options given below:

  • A
    $(C)$ and $(E)$ only
  • B
    $(B)$, $(C)$ and $(D)$ only
  • C
    $(B)$ and $(D)$ only
  • D
    $(A)$, $(B)$ and $(E)$ only

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Similar Questions

Which $d-$orbital of metal in $[Fe(CO)_5]$ is involved in hybridisation?

What is the coordination number of the central metal ion if it forms an octahedral complex?

Match List-$I$ with List-$II$:
List-$I$ (Complex/ion)List-$II$ (Shape/geometry)
$A$. $[Pt(Cl)_2(NH_3)_2]$$I$. Octahedral
$B$. $[Co(NH_3)_6]Cl_3$$II$. Trigonal bipyramidal
$C$. $[NiCl_4]^{2-}$$III$. Square planar
$D$. $[Fe(CO)_5]$$IV$. Tetrahedral

Which of the following is a square planar complex ion?

$[Ni(PPh_3)_2Cl_2]$ is a paramagnetic complex. Identify the $INCORRECT$ statements about this complex.
$A$. The complex exhibits geometrical isomerism.
$B$. The complex is white in colour.
$C$. The calculated spin-only magnetic moment of the complex is $2.84 \ BM$.
$D$. The calculated $CFSE$ (Crystal Field Stabilization Energy) of $Ni$ in this complex is $-0.8 \Delta_0$.
$E$. The geometrical arrangement of ligands in this complex is similar to that in $Ni(CO)_4$.
Choose the correct answer from the options given below:

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